Hardenize Report: simplelogin.io

Web Security Overview

HTTPS

Web sites need to use encryption to help their visitors know they're in the right place, as well as provide confidentiality and content integrity. Sites that don't support HTTPS may expose sensitive data and have their pages modified and subverted.

For all sites VERY IMPORTANT medium EFFORT

HTTPS Redirection

To deploy HTTPS properly, web sites must redirect all unsafe (plaintext) traffic to the encrypted variant. This approach ensures that no sensitive data is exposed and that further security technologies can be activated.

For all sites VERY IMPORTANT low EFFORT

HTTP Strict Transport Security

HTTP Strict Transport Security (HSTS) is an HTTPS extension that instructs browsers to remember sites that use encryption and enforce strict security requirements. Without HSTS, active network attacks are easy to carry out.

For important sites VERY IMPORTANT medium EFFORT

HSTS Preloaded

HSTS Preloading is informing browsers in advance about a site's use of HSTS, which means that strict security can be enforced even on the first visit. This approach provides best HTTPS security available today.

For important sites VERY IMPORTANT medium EFFORT

Content Security Policy

Content Security Policy (CSP) is an additional security layer that enables web sites to control browser behavior, creating a safety net that can counter attacks such as cross-site scripting.

For important sites IMPORTANT high EFFORT

Email Security Overview

STARTTLS

All hosts that receive email need encryption to ensure confidentiality of email messages. Email servers thus need to support STARTTLS, as well as provide decent TLS configuration and correct certificates.

For all sites VERY IMPORTANT low EFFORT

SPF

Sender Policy Framework (SPF) enables organizations to designate servers that are allowed to send email messages on their behalf. With SPF in place, spam is easier to identify.

For important sites IMPORTANT low EFFORT

DMARC

Domain-based Message Authentication, Reporting, and Conformance (DMARC) is a mechanism that allows organizations to specify how unauthenticated email (identified using SPF and DKIM) should be handled.

For important sites IMPORTANT low EFFORT

Name Server Configuration

Correctly functioning name servers are necessary to hold and distribute information that's necessary for your domain name to operate correctly. Examples include converting names to IP addresses, determining where email should go, and so on. More recently, the DNS is being used to communicate email and other security policies.

Test passed

Everything seems to be well configured. Well done.

DNS Configuration

These are the results of individual DNS queries against your nameserver for each resource record type.

Name	TTL	Type	Data
simplelogin.io.	30	A	94.237.111.15
www.simplelogin.io.	300	CNAME	simplelogin.io.
simplelogin.io.	30	AAAA	2a04:3544:1000:1510:8c7a:9cff:fe3c:4b2c
simplelogin.io.	3600	CAA	0 issue "comodoca.com"
simplelogin.io.	3600	CAA	0 issue "digicert.com"
simplelogin.io.	3600	CAA	0 issue "letsencrypt.org"
simplelogin.io.	3600	CAA	0 issuewild "comodoca.com"
simplelogin.io.	3600	CAA	0 issuewild "digicert.com"
simplelogin.io.	3600	CAA	0 issuewild "letsencrypt.org"
simplelogin.io.	300	MX	10 mx1.simplelogin.co.
simplelogin.io.	300	MX	20 mx2.simplelogin.co.
simplelogin.io.	300	TXT	v=spf1 include:simplelogin.co ~all
simplelogin.io.	300	TXT	google-site-verification=edUGaHD3wEFAoHRca08TXT2TaI9ebCRg1NA05JymoWI
_dmarc.simplelogin.io.	300	TXT	v=DMARC1; p=reject; sp=none; fo=1; rua=mailto:dmarc-rua@simplelogin.co;ruf=mailto:dmarc-ruf@simplelogin.co; adkim=r; aspf=r
_mta-sts.simplelogin.io.	300	TXT	v=STSv1; id=20200325;
mta-sts.simplelogin.io.	300	CNAME	simplelogin.io.
_smtp._tls.simplelogin.io.	300	TXT	v=TLSRPTv1;rua=mailto:tlsrpt@simplelogin.io
simplelogin.io.	86400	NS	kay.ns.cloudflare.com.
simplelogin.io.	86400	NS	marek.ns.cloudflare.com.
simplelogin.io.	3600	SOA	kay.ns.cloudflare.com. dns.cloudflare.com. 2036901077 10000 2400 604800 3600

DNSSEC

DNSSEC is an extension of the DNS protocol that provides cryptographic assurance of the authenticity and integrity of responses; it's intended as a defense against network attackers who are able to manipulate DNS to redirect their victims to servers of their choice. DNSSEC is controversial, with the industry split largely between those who think it's essential and those who believe that it's problematic and unnecessary.

Test passed

Everything seems to be well configured. Well done.

Analysis

DNSSEC is well configured

Good. This domain name has well-configured DNSSEC.

Useful DNSSEC Tools

Certification Authority Authorization

CAA (RFC 6844) is a new standard that allows domain name owners to restrict which CAs are allowed to issue certificates for their domains. This can help to reduce the chance of misissuance, either accidentally or maliciously. In September 2017, CAA became mandatory for CAs to implement.

Test passed

Everything seems to be well configured. Well done.

CAA Policy Information

The DNS hostname where this policy is located.Policy host	simplelogin.io
The issue property tag is used to request that certificate issuers perform CAA issue restriction processing for the domain and to grant authorization to specific certificate issuers.issue	letsencrypt.org flags: 0
The issuewild property has the same syntax and semantics as the issue property except that issuewild properties only grant authorization to issue certificates that specify a wildcard domain and issuewild properties take precedence over issue properties when specified.issuewild	comodoca.com flags: 0
The issuewild property has the same syntax and semantics as the issue property except that issuewild properties only grant authorization to issue certificates that specify a wildcard domain and issuewild properties take precedence over issue properties when specified.issuewild	digicert.com flags: 0
The issuewild property has the same syntax and semantics as the issue property except that issuewild properties only grant authorization to issue certificates that specify a wildcard domain and issuewild properties take precedence over issue properties when specified.issuewild	letsencrypt.org flags: 0
The issue property tag is used to request that certificate issuers perform CAA issue restriction processing for the domain and to grant authorization to specific certificate issuers.issue	comodoca.com flags: 0
The issue property tag is used to request that certificate issuers perform CAA issue restriction processing for the domain and to grant authorization to specific certificate issuers.issue	digicert.com flags: 0

Analysis

CAA policy found

Good. This domain name uses CAA to restrict which CAs are allowed to issue certificates for it.

Policy doesn't use reporting

This policy doesn't use reporting, which means that there is no way to contact you when a violation is detected. The CAA RFC defines the iodef property that can be used for this purpose. Do note that you're not guaranteed to be notified, given that CAs generally don't support notifications yet.

Email (SMTP)

An internet hostname can be served by zero or more mail servers, as specified by MX (mail exchange) DNS resource records. Each server can further resolve to multiple IP addresses, for example to handle IPv4 and IPv6 clients. Thus, in practice, hosts that wish to receive email reliably are supported by many endpoint.

Test passed

Everything seems to be well configured. Well done.

Server	Preference	Operational	STARTTLS	TLS	PKI	DNSSEC	DANE
mx1.simplelogin.co 2a04:3544:1000:1510:8c7a:9cff:fe3c:4b2c PTR: mx1.simplelogin.co	10
mx1.simplelogin.co 94.237.111.15 PTR: mx1.simplelogin.co	10
mx2.simplelogin.co 2a04:3544:1000:1510:8c7a:9cff:fe3c:4e55 PTR: mx2.simplelogin.co	20
mx2.simplelogin.co 94.237.125.28 PTR: mx2.simplelogin.co	20

Analysis

Configuration satisfies advertised MTA-STS policy

Good. This host supports MTA-STS, which means that it restricts which MX servers can be used and how they are configured. We've verified that all MX servers listed here match the policy.

Email TLS (SMTP)

Transport Layer Security (TLS) is the most widely used encryption protocol on the Internet. In combination with valid certificates, servers can establish trusted communication channels even with users who have never visited them before. Network attackers can't uncover what is being communicated, even when they can see all the traffic.

Test passed

Everything seems to be well configured. Well done.

TLS Configuration: mx2.simplelogin.co (2a04:3544:1000:1510:8c7a:9cff:fe3c:4e55)

Encryption protocol version determines what features are available for negotiation between client and server.Supported protocols	TLS v1.3 TLS v1.2 TLS v1.1
Servers should always enforce their own cipher suite preference, as that is the only approach that guarantees that the best possible suite is selected.Server suite preference
Shows cipher suite configuration for this protocol version.TLS v1.3 Unknown preference	Suite: TLS_CHACHA20_POLY1305_SHA256 Suite ID: 0x1303 Cipher name: CHACHA20 Cipher strength: 256 bits Cipher mode: AEAD Key exchange: ecdh_x25519 Key exchange strength: EC ecdh_x25519 (256 bits) Forward secrecy: Yes PRF: SHA256 TLS_CHACHA20_POLY1305_SHA256 256 bits (ECDHE 256 bits) Suite: TLS_AES_128_GCM_SHA256 Suite ID: 0x1301 Cipher name: AES Cipher strength: 128 bits Cipher block size: 128 bits Cipher mode: AEAD Key exchange: ecdh_x25519 Key exchange strength: EC ecdh_x25519 (256 bits) Forward secrecy: Yes PRF: SHA256 TLS_AES_128_GCM_SHA256 128 bits (ECDHE 256 bits) Suite: TLS_AES_256_GCM_SHA384 Suite ID: 0x1302 Cipher name: AES Cipher strength: 256 bits Cipher block size: 128 bits Cipher mode: AEAD Key exchange: ecdh_x25519 Key exchange strength: EC ecdh_x25519 (256 bits) Forward secrecy: Yes PRF: SHA384 TLS_AES_256_GCM_SHA384 256 bits (ECDHE 256 bits)
Shows cipher suite configuration for this protocol version.TLS v1.2 Unknown preference	Suite: TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256 Suite ID: 0xcca8 Cipher name: CHACHA20 Cipher strength: 256 bits Cipher mode: AEAD Key exchange: ECDHE_RSA Key exchange strength: EC ecdh_x25519 (256 bits) Forward secrecy: Yes PRF: SHA256 TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256 256 bits (ECDHE 256 bits) Suite: TLS_DHE_RSA_WITH_CHACHA20_POLY1305_SHA256 Suite ID: 0xccaa Cipher name: CHACHA20 Cipher strength: 256 bits Cipher mode: AEAD Key exchange: DHE_RSA Key exchange strength: 2048 bits Forward secrecy: Yes PRF: SHA256 TLS_DHE_RSA_WITH_CHACHA20_POLY1305_SHA256 256 bits (DHE 2048 bits) Suite: TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA Suite ID: 0xc013 Cipher name: AES Cipher strength: 128 bits Cipher block size: 128 bits Cipher mode: CBC Key exchange: ECDHE_RSA Key exchange strength: EC ecdh_x25519 (256 bits) Forward secrecy: Yes PRF: SHA TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA 128 bits (ECDHE 256 bits) Suite: TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA Suite ID: 0xc014 Cipher name: AES Cipher strength: 256 bits Cipher block size: 128 bits Cipher mode: CBC Key exchange: ECDHE_RSA Key exchange strength: EC ecdh_x25519 (256 bits) Forward secrecy: Yes PRF: SHA TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA 256 bits (ECDHE 256 bits) Suite: TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256 Suite ID: 0xc027 Cipher name: AES Cipher strength: 128 bits Cipher block size: 128 bits Cipher mode: CBC Key exchange: ECDHE_RSA Key exchange strength: EC ecdh_x25519 (256 bits) Forward secrecy: Yes PRF: SHA256 TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256 128 bits (ECDHE 256 bits) Suite: TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384 Suite ID: 0xc028 Cipher name: AES Cipher strength: 256 bits Cipher block size: 128 bits Cipher mode: CBC Key exchange: ECDHE_RSA Key exchange strength: EC ecdh_x25519 (256 bits) Forward secrecy: Yes PRF: SHA384 TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384 256 bits (ECDHE 256 bits) Suite: TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256 Suite ID: 0xc02f Cipher name: AES Cipher strength: 128 bits Cipher block size: 128 bits Cipher mode: AEAD Key exchange: ECDHE_RSA Key exchange strength: EC ecdh_x25519 (256 bits) Forward secrecy: Yes PRF: SHA256 TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256 128 bits (ECDHE 256 bits) Suite: TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 Suite ID: 0xc030 Cipher name: AES Cipher strength: 256 bits Cipher block size: 128 bits Cipher mode: AEAD Key exchange: ECDHE_RSA Key exchange strength: EC ecdh_x25519 (256 bits) Forward secrecy: Yes PRF: SHA384 TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 256 bits (ECDHE 256 bits) Suite: TLS_DHE_RSA_WITH_AES_128_CBC_SHA Suite ID: 0x33 Cipher name: AES Cipher strength: 128 bits Cipher block size: 128 bits Cipher mode: CBC Key exchange: DHE_RSA Key exchange strength: 2048 bits Forward secrecy: Yes PRF: SHA TLS_DHE_RSA_WITH_AES_128_CBC_SHA 128 bits (DHE 2048 bits) Suite: TLS_DHE_RSA_WITH_AES_256_CBC_SHA Suite ID: 0x39 Cipher name: AES Cipher strength: 256 bits Cipher block size: 128 bits Cipher mode: CBC Key exchange: DHE_RSA Key exchange strength: 2048 bits Forward secrecy: Yes PRF: SHA TLS_DHE_RSA_WITH_AES_256_CBC_SHA 256 bits (DHE 2048 bits) Suite: TLS_RSA_WITH_ARIA_128_GCM_SHA256 Suite ID: 0xc050 Cipher name: ARIA Cipher strength: 128 bits Cipher block size: 128 bits Cipher mode: AEAD Key exchange: RSA Key exchange strength: 2048 bits Forward secrecy: No (WEAK) PRF: SHA256 TLS_RSA_WITH_ARIA_128_GCM_SHA256 128 bits Suite: TLS_RSA_WITH_ARIA_256_GCM_SHA384 Suite ID: 0xc051 Cipher name: ARIA Cipher strength: 256 bits Cipher block size: 128 bits Cipher mode: AEAD Key exchange: RSA Key exchange strength: 2048 bits Forward secrecy: No (WEAK) PRF: SHA384 TLS_RSA_WITH_ARIA_256_GCM_SHA384 256 bits Suite: TLS_DHE_RSA_WITH_ARIA_128_GCM_SHA256 Suite ID: 0xc052 Cipher name: ARIA Cipher strength: 128 bits Cipher block size: 128 bits Cipher mode: AEAD Key exchange: DHE_RSA Key exchange strength: 2048 bits Forward secrecy: Yes PRF: SHA256 TLS_DHE_RSA_WITH_ARIA_128_GCM_SHA256 128 bits (DHE 2048 bits) Suite: TLS_DHE_RSA_WITH_ARIA_256_GCM_SHA384 Suite ID: 0xc053 Cipher name: ARIA Cipher strength: 256 bits Cipher block size: 128 bits Cipher mode: AEAD Key exchange: DHE_RSA Key exchange strength: 2048 bits Forward secrecy: Yes PRF: SHA384 TLS_DHE_RSA_WITH_ARIA_256_GCM_SHA384 256 bits (DHE 2048 bits) Suite: TLS_ECDHE_RSA_WITH_ARIA_128_GCM_SHA256 Suite ID: 0xc060 Cipher name: ARIA Cipher strength: 128 bits Cipher block size: 128 bits Cipher mode: AEAD Key exchange: ECDHE_RSA Key exchange strength: EC ecdh_x25519 (256 bits) Forward secrecy: Yes PRF: SHA256 TLS_ECDHE_RSA_WITH_ARIA_128_GCM_SHA256 128 bits (ECDHE 256 bits) Suite: TLS_ECDHE_RSA_WITH_ARIA_256_GCM_SHA384 Suite ID: 0xc061 Cipher name: ARIA Cipher strength: 256 bits Cipher block size: 128 bits Cipher mode: AEAD Key exchange: ECDHE_RSA Key exchange strength: EC ecdh_x25519 (256 bits) Forward secrecy: Yes PRF: SHA384 TLS_ECDHE_RSA_WITH_ARIA_256_GCM_SHA384 256 bits (ECDHE 256 bits) Suite: TLS_DHE_RSA_WITH_AES_128_CBC_SHA256 Suite ID: 0x67 Cipher name: AES Cipher strength: 128 bits Cipher block size: 128 bits Cipher mode: CBC Key exchange: DHE_RSA Key exchange strength: 2048 bits Forward secrecy: Yes PRF: SHA256 TLS_DHE_RSA_WITH_AES_128_CBC_SHA256 128 bits (DHE 2048 bits) Suite: TLS_DHE_RSA_WITH_AES_256_CBC_SHA256 Suite ID: 0x6b Cipher name: AES Cipher strength: 256 bits Cipher block size: 128 bits Cipher mode: CBC Key exchange: DHE_RSA Key exchange strength: 2048 bits Forward secrecy: Yes PRF: SHA256 TLS_DHE_RSA_WITH_AES_256_CBC_SHA256 256 bits (DHE 2048 bits) Suite: TLS_RSA_WITH_AES_128_CCM Suite ID: 0xc09c Cipher name: AES Cipher strength: 128 bits Cipher block size: 128 bits Cipher mode: AEAD Key exchange: RSA Key exchange strength: 2048 bits Forward secrecy: No (WEAK) PRF: SHA256 TLS_RSA_WITH_AES_128_CCM 128 bits Suite: TLS_RSA_WITH_AES_256_CCM Suite ID: 0xc09d Cipher name: AES Cipher strength: 256 bits Cipher block size: 128 bits Cipher mode: AEAD Key exchange: RSA Key exchange strength: 2048 bits Forward secrecy: No (WEAK) PRF: SHA256 TLS_RSA_WITH_AES_256_CCM 256 bits Suite: TLS_DHE_RSA_WITH_AES_128_GCM_SHA256 Suite ID: 0x9e Cipher name: AES Cipher strength: 128 bits Cipher block size: 128 bits Cipher mode: AEAD Key exchange: DHE_RSA Key exchange strength: 2048 bits Forward secrecy: Yes PRF: SHA256 TLS_DHE_RSA_WITH_AES_128_GCM_SHA256 128 bits (DHE 2048 bits) Suite: TLS_DHE_RSA_WITH_AES_128_CCM Suite ID: 0xc09e Cipher name: AES Cipher strength: 128 bits Cipher block size: 128 bits Cipher mode: AEAD Key exchange: DHE_RSA Key exchange strength: 2048 bits Forward secrecy: Yes PRF: SHA256 TLS_DHE_RSA_WITH_AES_128_CCM 128 bits (DHE 2048 bits) Suite: TLS_DHE_RSA_WITH_AES_256_GCM_SHA384 Suite ID: 0x9f Cipher name: AES Cipher strength: 256 bits Cipher block size: 128 bits Cipher mode: AEAD Key exchange: DHE_RSA Key exchange strength: 2048 bits Forward secrecy: Yes PRF: SHA384 TLS_DHE_RSA_WITH_AES_256_GCM_SHA384 256 bits (DHE 2048 bits) Suite: TLS_DHE_RSA_WITH_AES_256_CCM Suite ID: 0xc09f Cipher name: AES Cipher strength: 256 bits Cipher block size: 128 bits Cipher mode: AEAD Key exchange: DHE_RSA Key exchange strength: 2048 bits Forward secrecy: Yes PRF: SHA256 TLS_DHE_RSA_WITH_AES_256_CCM 256 bits (DHE 2048 bits) Suite: TLS_RSA_WITH_AES_128_CCM_8 Suite ID: 0xc0a0 Cipher name: AES Cipher strength: 128 bits Cipher block size: 128 bits Cipher mode: AEAD Key exchange: RSA Key exchange strength: 2048 bits Forward secrecy: No (WEAK) PRF: SHA256 TLS_RSA_WITH_AES_128_CCM_8 128 bits Suite: TLS_RSA_WITH_AES_256_CCM_8 Suite ID: 0xc0a1 Cipher name: AES Cipher strength: 256 bits Cipher block size: 128 bits Cipher mode: AEAD Key exchange: RSA Key exchange strength: 2048 bits Forward secrecy: No (WEAK) PRF: SHA256 TLS_RSA_WITH_AES_256_CCM_8 256 bits Suite: TLS_DHE_RSA_WITH_AES_128_CCM_8 Suite ID: 0xc0a2 Cipher name: AES Cipher strength: 128 bits Cipher block size: 128 bits Cipher mode: AEAD Key exchange: DHE_RSA Key exchange strength: 2048 bits Forward secrecy: Yes PRF: SHA256 TLS_DHE_RSA_WITH_AES_128_CCM_8 128 bits (DHE 2048 bits) Suite: TLS_DHE_RSA_WITH_AES_256_CCM_8 Suite ID: 0xc0a3 Cipher name: AES Cipher strength: 256 bits Cipher block size: 128 bits Cipher mode: AEAD Key exchange: DHE_RSA Key exchange strength: 2048 bits Forward secrecy: Yes PRF: SHA256 TLS_DHE_RSA_WITH_AES_256_CCM_8 256 bits (DHE 2048 bits)
Shows cipher suite configuration for this protocol version.TLS v1.1 Unknown preference	Suite: TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA Suite ID: 0xc013 Cipher name: AES Cipher strength: 128 bits Cipher block size: 128 bits Cipher mode: CBC Key exchange: ECDHE_RSA Key exchange strength: EC ecdh_x25519 (256 bits) Forward secrecy: Yes PRF: SHA TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA 128 bits (ECDHE 256 bits) Suite: TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA Suite ID: 0xc014 Cipher name: AES Cipher strength: 256 bits Cipher block size: 128 bits Cipher mode: CBC Key exchange: ECDHE_RSA Key exchange strength: EC ecdh_x25519 (256 bits) Forward secrecy: Yes PRF: SHA TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA 256 bits (ECDHE 256 bits) Suite: TLS_DHE_RSA_WITH_AES_128_CBC_SHA Suite ID: 0x33 Cipher name: AES Cipher strength: 128 bits Cipher block size: 128 bits Cipher mode: CBC Key exchange: DHE_RSA Key exchange strength: 2048 bits Forward secrecy: Yes PRF: SHA TLS_DHE_RSA_WITH_AES_128_CBC_SHA 128 bits (DHE 2048 bits) Suite: TLS_DHE_RSA_WITH_AES_256_CBC_SHA Suite ID: 0x39 Cipher name: AES Cipher strength: 256 bits Cipher block size: 128 bits Cipher mode: CBC Key exchange: DHE_RSA Key exchange strength: 2048 bits Forward secrecy: Yes PRF: SHA TLS_DHE_RSA_WITH_AES_256_CBC_SHA 256 bits (DHE 2048 bits)

Analysis

TLS 1.2 supported

Good. This server supports TLS 1.2, which can provide strong security when configured correctly. This version of the TLS protocol is necessary to provide good security with a wide range of clients that don't yet support TLS 1.3.

Server doesn't enforce cipher suite preferences

Servers that don't enforce cipher suite preferences select the first cipher suite they support from the list provided by clients. This approach doesn't guarantee that best-possible cipher suite is negotiated.

Strong key exchange detected

Excellent. All cipher suites on this server rely on strong key exchange. The sweet spot is 2048 bits for DHE and 256 bits for ECDHE. Putting ECDHE suites first guarantees best security and best performance.

Server prefers forward secrecy and authenticated encryption suites

Excellent. Not only does this server enforce its server preference, but it also has at the top of the list suites that support both forward secrecy and authenticated encryption. This is the best TLS 1.2 can offer.

Relaxed TLS assessment criteria applied to SMTP on port 25

We apply relaxed assessment criteria when evaluating TLS configuration of SMTP servers on port 25. This is because most delivery agents fall back to delivering via plaintext on failure to negotiate encryption. Some configuration elements that can be abused to attack other ports and protocols (e.g., SSLv2 and export cipher suites) are penalized in the same way as for other protocols. We will review this policy in the future.

DHE server parameter not reused

This server does not reuse the private value used for the Diffie-Hellman key exchange.

TLS Configuration: mx2.simplelogin.co (94.237.125.28)

Encryption protocol version determines what features are available for negotiation between client and server.Supported protocols	TLS v1.3 TLS v1.2 TLS v1.1
Servers should always enforce their own cipher suite preference, as that is the only approach that guarantees that the best possible suite is selected.Server suite preference
Shows cipher suite configuration for this protocol version.TLS v1.3 Unknown preference	Suite: TLS_CHACHA20_POLY1305_SHA256 Suite ID: 0x1303 Cipher name: CHACHA20 Cipher strength: 256 bits Cipher mode: AEAD Key exchange: ecdh_x25519 Key exchange strength: EC ecdh_x25519 (256 bits) Forward secrecy: Yes PRF: SHA256 TLS_CHACHA20_POLY1305_SHA256 256 bits (ECDHE 256 bits) Suite: TLS_AES_128_GCM_SHA256 Suite ID: 0x1301 Cipher name: AES Cipher strength: 128 bits Cipher block size: 128 bits Cipher mode: AEAD Key exchange: ecdh_x25519 Key exchange strength: EC ecdh_x25519 (256 bits) Forward secrecy: Yes PRF: SHA256 TLS_AES_128_GCM_SHA256 128 bits (ECDHE 256 bits) Suite: TLS_AES_256_GCM_SHA384 Suite ID: 0x1302 Cipher name: AES Cipher strength: 256 bits Cipher block size: 128 bits Cipher mode: AEAD Key exchange: ecdh_x25519 Key exchange strength: EC ecdh_x25519 (256 bits) Forward secrecy: Yes PRF: SHA384 TLS_AES_256_GCM_SHA384 256 bits (ECDHE 256 bits)
Shows cipher suite configuration for this protocol version.TLS v1.2 Unknown preference	Suite: TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256 Suite ID: 0xcca8 Cipher name: CHACHA20 Cipher strength: 256 bits Cipher mode: AEAD Key exchange: ECDHE_RSA Key exchange strength: EC ecdh_x25519 (256 bits) Forward secrecy: Yes PRF: SHA256 TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256 256 bits (ECDHE 256 bits) Suite: TLS_DHE_RSA_WITH_CHACHA20_POLY1305_SHA256 Suite ID: 0xccaa Cipher name: CHACHA20 Cipher strength: 256 bits Cipher mode: AEAD Key exchange: DHE_RSA Key exchange strength: 2048 bits Forward secrecy: Yes PRF: SHA256 TLS_DHE_RSA_WITH_CHACHA20_POLY1305_SHA256 256 bits (DHE 2048 bits) Suite: TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA Suite ID: 0xc013 Cipher name: AES Cipher strength: 128 bits Cipher block size: 128 bits Cipher mode: CBC Key exchange: ECDHE_RSA Key exchange strength: EC ecdh_x25519 (256 bits) Forward secrecy: Yes PRF: SHA TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA 128 bits (ECDHE 256 bits) Suite: TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA Suite ID: 0xc014 Cipher name: AES Cipher strength: 256 bits Cipher block size: 128 bits Cipher mode: CBC Key exchange: ECDHE_RSA Key exchange strength: EC ecdh_x25519 (256 bits) Forward secrecy: Yes PRF: SHA TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA 256 bits (ECDHE 256 bits) Suite: TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256 Suite ID: 0xc027 Cipher name: AES Cipher strength: 128 bits Cipher block size: 128 bits Cipher mode: CBC Key exchange: ECDHE_RSA Key exchange strength: EC ecdh_x25519 (256 bits) Forward secrecy: Yes PRF: SHA256 TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256 128 bits (ECDHE 256 bits) Suite: TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384 Suite ID: 0xc028 Cipher name: AES Cipher strength: 256 bits Cipher block size: 128 bits Cipher mode: CBC Key exchange: ECDHE_RSA Key exchange strength: EC ecdh_x25519 (256 bits) Forward secrecy: Yes PRF: SHA384 TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384 256 bits (ECDHE 256 bits) Suite: TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256 Suite ID: 0xc02f Cipher name: AES Cipher strength: 128 bits Cipher block size: 128 bits Cipher mode: AEAD Key exchange: ECDHE_RSA Key exchange strength: EC ecdh_x25519 (256 bits) Forward secrecy: Yes PRF: SHA256 TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256 128 bits (ECDHE 256 bits) Suite: TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 Suite ID: 0xc030 Cipher name: AES Cipher strength: 256 bits Cipher block size: 128 bits Cipher mode: AEAD Key exchange: ECDHE_RSA Key exchange strength: EC ecdh_x25519 (256 bits) Forward secrecy: Yes PRF: SHA384 TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 256 bits (ECDHE 256 bits) Suite: TLS_DHE_RSA_WITH_AES_128_CBC_SHA Suite ID: 0x33 Cipher name: AES Cipher strength: 128 bits Cipher block size: 128 bits Cipher mode: CBC Key exchange: DHE_RSA Key exchange strength: 2048 bits Forward secrecy: Yes PRF: SHA TLS_DHE_RSA_WITH_AES_128_CBC_SHA 128 bits (DHE 2048 bits) Suite: TLS_DHE_RSA_WITH_AES_256_CBC_SHA Suite ID: 0x39 Cipher name: AES Cipher strength: 256 bits Cipher block size: 128 bits Cipher mode: CBC Key exchange: DHE_RSA Key exchange strength: 2048 bits Forward secrecy: Yes PRF: SHA TLS_DHE_RSA_WITH_AES_256_CBC_SHA 256 bits (DHE 2048 bits) Suite: TLS_RSA_WITH_ARIA_128_GCM_SHA256 Suite ID: 0xc050 Cipher name: ARIA Cipher strength: 128 bits Cipher block size: 128 bits Cipher mode: AEAD Key exchange: RSA Key exchange strength: 2048 bits Forward secrecy: No (WEAK) PRF: SHA256 TLS_RSA_WITH_ARIA_128_GCM_SHA256 128 bits Suite: TLS_RSA_WITH_ARIA_256_GCM_SHA384 Suite ID: 0xc051 Cipher name: ARIA Cipher strength: 256 bits Cipher block size: 128 bits Cipher mode: AEAD Key exchange: RSA Key exchange strength: 2048 bits Forward secrecy: No (WEAK) PRF: SHA384 TLS_RSA_WITH_ARIA_256_GCM_SHA384 256 bits Suite: TLS_DHE_RSA_WITH_ARIA_128_GCM_SHA256 Suite ID: 0xc052 Cipher name: ARIA Cipher strength: 128 bits Cipher block size: 128 bits Cipher mode: AEAD Key exchange: DHE_RSA Key exchange strength: 2048 bits Forward secrecy: Yes PRF: SHA256 TLS_DHE_RSA_WITH_ARIA_128_GCM_SHA256 128 bits (DHE 2048 bits) Suite: TLS_DHE_RSA_WITH_ARIA_256_GCM_SHA384 Suite ID: 0xc053 Cipher name: ARIA Cipher strength: 256 bits Cipher block size: 128 bits Cipher mode: AEAD Key exchange: DHE_RSA Key exchange strength: 2048 bits Forward secrecy: Yes PRF: SHA384 TLS_DHE_RSA_WITH_ARIA_256_GCM_SHA384 256 bits (DHE 2048 bits) Suite: TLS_ECDHE_RSA_WITH_ARIA_128_GCM_SHA256 Suite ID: 0xc060 Cipher name: ARIA Cipher strength: 128 bits Cipher block size: 128 bits Cipher mode: AEAD Key exchange: ECDHE_RSA Key exchange strength: EC ecdh_x25519 (256 bits) Forward secrecy: Yes PRF: SHA256 TLS_ECDHE_RSA_WITH_ARIA_128_GCM_SHA256 128 bits (ECDHE 256 bits) Suite: TLS_ECDHE_RSA_WITH_ARIA_256_GCM_SHA384 Suite ID: 0xc061 Cipher name: ARIA Cipher strength: 256 bits Cipher block size: 128 bits Cipher mode: AEAD Key exchange: ECDHE_RSA Key exchange strength: EC ecdh_x25519 (256 bits) Forward secrecy: Yes PRF: SHA384 TLS_ECDHE_RSA_WITH_ARIA_256_GCM_SHA384 256 bits (ECDHE 256 bits) Suite: TLS_DHE_RSA_WITH_AES_128_CBC_SHA256 Suite ID: 0x67 Cipher name: AES Cipher strength: 128 bits Cipher block size: 128 bits Cipher mode: CBC Key exchange: DHE_RSA Key exchange strength: 2048 bits Forward secrecy: Yes PRF: SHA256 TLS_DHE_RSA_WITH_AES_128_CBC_SHA256 128 bits (DHE 2048 bits) Suite: TLS_DHE_RSA_WITH_AES_256_CBC_SHA256 Suite ID: 0x6b Cipher name: AES Cipher strength: 256 bits Cipher block size: 128 bits Cipher mode: CBC Key exchange: DHE_RSA Key exchange strength: 2048 bits Forward secrecy: Yes PRF: SHA256 TLS_DHE_RSA_WITH_AES_256_CBC_SHA256 256 bits (DHE 2048 bits) Suite: TLS_RSA_WITH_AES_128_CCM Suite ID: 0xc09c Cipher name: AES Cipher strength: 128 bits Cipher block size: 128 bits Cipher mode: AEAD Key exchange: RSA Key exchange strength: 2048 bits Forward secrecy: No (WEAK) PRF: SHA256 TLS_RSA_WITH_AES_128_CCM 128 bits Suite: TLS_RSA_WITH_AES_256_CCM Suite ID: 0xc09d Cipher name: AES Cipher strength: 256 bits Cipher block size: 128 bits Cipher mode: AEAD Key exchange: RSA Key exchange strength: 2048 bits Forward secrecy: No (WEAK) PRF: SHA256 TLS_RSA_WITH_AES_256_CCM 256 bits Suite: TLS_DHE_RSA_WITH_AES_128_GCM_SHA256 Suite ID: 0x9e Cipher name: AES Cipher strength: 128 bits Cipher block size: 128 bits Cipher mode: AEAD Key exchange: DHE_RSA Key exchange strength: 2048 bits Forward secrecy: Yes PRF: SHA256 TLS_DHE_RSA_WITH_AES_128_GCM_SHA256 128 bits (DHE 2048 bits) Suite: TLS_DHE_RSA_WITH_AES_128_CCM Suite ID: 0xc09e Cipher name: AES Cipher strength: 128 bits Cipher block size: 128 bits Cipher mode: AEAD Key exchange: DHE_RSA Key exchange strength: 2048 bits Forward secrecy: Yes PRF: SHA256 TLS_DHE_RSA_WITH_AES_128_CCM 128 bits (DHE 2048 bits) Suite: TLS_DHE_RSA_WITH_AES_256_GCM_SHA384 Suite ID: 0x9f Cipher name: AES Cipher strength: 256 bits Cipher block size: 128 bits Cipher mode: AEAD Key exchange: DHE_RSA Key exchange strength: 2048 bits Forward secrecy: Yes PRF: SHA384 TLS_DHE_RSA_WITH_AES_256_GCM_SHA384 256 bits (DHE 2048 bits) Suite: TLS_DHE_RSA_WITH_AES_256_CCM Suite ID: 0xc09f Cipher name: AES Cipher strength: 256 bits Cipher block size: 128 bits Cipher mode: AEAD Key exchange: DHE_RSA Key exchange strength: 2048 bits Forward secrecy: Yes PRF: SHA256 TLS_DHE_RSA_WITH_AES_256_CCM 256 bits (DHE 2048 bits) Suite: TLS_RSA_WITH_AES_128_CCM_8 Suite ID: 0xc0a0 Cipher name: AES Cipher strength: 128 bits Cipher block size: 128 bits Cipher mode: AEAD Key exchange: RSA Key exchange strength: 2048 bits Forward secrecy: No (WEAK) PRF: SHA256 TLS_RSA_WITH_AES_128_CCM_8 128 bits Suite: TLS_RSA_WITH_AES_256_CCM_8 Suite ID: 0xc0a1 Cipher name: AES Cipher strength: 256 bits Cipher block size: 128 bits Cipher mode: AEAD Key exchange: RSA Key exchange strength: 2048 bits Forward secrecy: No (WEAK) PRF: SHA256 TLS_RSA_WITH_AES_256_CCM_8 256 bits Suite: TLS_DHE_RSA_WITH_AES_128_CCM_8 Suite ID: 0xc0a2 Cipher name: AES Cipher strength: 128 bits Cipher block size: 128 bits Cipher mode: AEAD Key exchange: DHE_RSA Key exchange strength: 2048 bits Forward secrecy: Yes PRF: SHA256 TLS_DHE_RSA_WITH_AES_128_CCM_8 128 bits (DHE 2048 bits) Suite: TLS_DHE_RSA_WITH_AES_256_CCM_8 Suite ID: 0xc0a3 Cipher name: AES Cipher strength: 256 bits Cipher block size: 128 bits Cipher mode: AEAD Key exchange: DHE_RSA Key exchange strength: 2048 bits Forward secrecy: Yes PRF: SHA256 TLS_DHE_RSA_WITH_AES_256_CCM_8 256 bits (DHE 2048 bits)
Shows cipher suite configuration for this protocol version.TLS v1.1 Unknown preference	Suite: TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA Suite ID: 0xc013 Cipher name: AES Cipher strength: 128 bits Cipher block size: 128 bits Cipher mode: CBC Key exchange: ECDHE_RSA Key exchange strength: EC ecdh_x25519 (256 bits) Forward secrecy: Yes PRF: SHA TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA 128 bits (ECDHE 256 bits) Suite: TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA Suite ID: 0xc014 Cipher name: AES Cipher strength: 256 bits Cipher block size: 128 bits Cipher mode: CBC Key exchange: ECDHE_RSA Key exchange strength: EC ecdh_x25519 (256 bits) Forward secrecy: Yes PRF: SHA TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA 256 bits (ECDHE 256 bits) Suite: TLS_DHE_RSA_WITH_AES_128_CBC_SHA Suite ID: 0x33 Cipher name: AES Cipher strength: 128 bits Cipher block size: 128 bits Cipher mode: CBC Key exchange: DHE_RSA Key exchange strength: 2048 bits Forward secrecy: Yes PRF: SHA TLS_DHE_RSA_WITH_AES_128_CBC_SHA 128 bits (DHE 2048 bits) Suite: TLS_DHE_RSA_WITH_AES_256_CBC_SHA Suite ID: 0x39 Cipher name: AES Cipher strength: 256 bits Cipher block size: 128 bits Cipher mode: CBC Key exchange: DHE_RSA Key exchange strength: 2048 bits Forward secrecy: Yes PRF: SHA TLS_DHE_RSA_WITH_AES_256_CBC_SHA 256 bits (DHE 2048 bits)

Analysis

TLS 1.2 supported

Good. This server supports TLS 1.2, which can provide strong security when configured correctly. This version of the TLS protocol is necessary to provide good security with a wide range of clients that don't yet support TLS 1.3.

Server doesn't enforce cipher suite preferences

Servers that don't enforce cipher suite preferences select the first cipher suite they support from the list provided by clients. This approach doesn't guarantee that best-possible cipher suite is negotiated.

Strong key exchange detected

Excellent. All cipher suites on this server rely on strong key exchange. The sweet spot is 2048 bits for DHE and 256 bits for ECDHE. Putting ECDHE suites first guarantees best security and best performance.

Server prefers forward secrecy and authenticated encryption suites

Excellent. Not only does this server enforce its server preference, but it also has at the top of the list suites that support both forward secrecy and authenticated encryption. This is the best TLS 1.2 can offer.

Relaxed TLS assessment criteria applied to SMTP on port 25

We apply relaxed assessment criteria when evaluating TLS configuration of SMTP servers on port 25. This is because most delivery agents fall back to delivering via plaintext on failure to negotiate encryption. Some configuration elements that can be abused to attack other ports and protocols (e.g., SSLv2 and export cipher suites) are penalized in the same way as for other protocols. We will review this policy in the future.

DHE server parameter not reused

This server does not reuse the private value used for the Diffie-Hellman key exchange.

TLS Configuration: mx1.simplelogin.co (2a04:3544:1000:1510:8c7a:9cff:fe3c:4b2c)

Encryption protocol version determines what features are available for negotiation between client and server.Supported protocols	TLS v1.3 TLS v1.2 TLS v1.1
Servers should always enforce their own cipher suite preference, as that is the only approach that guarantees that the best possible suite is selected.Server suite preference
Shows cipher suite configuration for this protocol version.TLS v1.3 Unknown preference	Suite: TLS_CHACHA20_POLY1305_SHA256 Suite ID: 0x1303 Cipher name: CHACHA20 Cipher strength: 256 bits Cipher mode: AEAD Key exchange: ecdh_x25519 Key exchange strength: EC ecdh_x25519 (256 bits) Forward secrecy: Yes PRF: SHA256 TLS_CHACHA20_POLY1305_SHA256 256 bits (ECDHE 256 bits) Suite: TLS_AES_128_GCM_SHA256 Suite ID: 0x1301 Cipher name: AES Cipher strength: 128 bits Cipher block size: 128 bits Cipher mode: AEAD Key exchange: ecdh_x25519 Key exchange strength: EC ecdh_x25519 (256 bits) Forward secrecy: Yes PRF: SHA256 TLS_AES_128_GCM_SHA256 128 bits (ECDHE 256 bits) Suite: TLS_AES_256_GCM_SHA384 Suite ID: 0x1302 Cipher name: AES Cipher strength: 256 bits Cipher block size: 128 bits Cipher mode: AEAD Key exchange: ecdh_x25519 Key exchange strength: EC ecdh_x25519 (256 bits) Forward secrecy: Yes PRF: SHA384 TLS_AES_256_GCM_SHA384 256 bits (ECDHE 256 bits)
Shows cipher suite configuration for this protocol version.TLS v1.2 Unknown preference	Suite: TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256 Suite ID: 0xcca8 Cipher name: CHACHA20 Cipher strength: 256 bits Cipher mode: AEAD Key exchange: ECDHE_RSA Key exchange strength: EC ecdh_x25519 (256 bits) Forward secrecy: Yes PRF: SHA256 TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256 256 bits (ECDHE 256 bits) Suite: TLS_DHE_RSA_WITH_CHACHA20_POLY1305_SHA256 Suite ID: 0xccaa Cipher name: CHACHA20 Cipher strength: 256 bits Cipher mode: AEAD Key exchange: DHE_RSA Key exchange strength: 2048 bits Forward secrecy: Yes PRF: SHA256 TLS_DHE_RSA_WITH_CHACHA20_POLY1305_SHA256 256 bits (DHE 2048 bits) Suite: TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA Suite ID: 0xc013 Cipher name: AES Cipher strength: 128 bits Cipher block size: 128 bits Cipher mode: CBC Key exchange: ECDHE_RSA Key exchange strength: EC ecdh_x25519 (256 bits) Forward secrecy: Yes PRF: SHA TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA 128 bits (ECDHE 256 bits) Suite: TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA Suite ID: 0xc014 Cipher name: AES Cipher strength: 256 bits Cipher block size: 128 bits Cipher mode: CBC Key exchange: ECDHE_RSA Key exchange strength: EC ecdh_x25519 (256 bits) Forward secrecy: Yes PRF: SHA TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA 256 bits (ECDHE 256 bits) Suite: TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256 Suite ID: 0xc027 Cipher name: AES Cipher strength: 128 bits Cipher block size: 128 bits Cipher mode: CBC Key exchange: ECDHE_RSA Key exchange strength: EC ecdh_x25519 (256 bits) Forward secrecy: Yes PRF: SHA256 TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256 128 bits (ECDHE 256 bits) Suite: TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384 Suite ID: 0xc028 Cipher name: AES Cipher strength: 256 bits Cipher block size: 128 bits Cipher mode: CBC Key exchange: ECDHE_RSA Key exchange strength: EC ecdh_x25519 (256 bits) Forward secrecy: Yes PRF: SHA384 TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384 256 bits (ECDHE 256 bits) Suite: TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256 Suite ID: 0xc02f Cipher name: AES Cipher strength: 128 bits Cipher block size: 128 bits Cipher mode: AEAD Key exchange: ECDHE_RSA Key exchange strength: EC ecdh_x25519 (256 bits) Forward secrecy: Yes PRF: SHA256 TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256 128 bits (ECDHE 256 bits) Suite: TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 Suite ID: 0xc030 Cipher name: AES Cipher strength: 256 bits Cipher block size: 128 bits Cipher mode: AEAD Key exchange: ECDHE_RSA Key exchange strength: EC ecdh_x25519 (256 bits) Forward secrecy: Yes PRF: SHA384 TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 256 bits (ECDHE 256 bits) Suite: TLS_DHE_RSA_WITH_AES_128_CBC_SHA Suite ID: 0x33 Cipher name: AES Cipher strength: 128 bits Cipher block size: 128 bits Cipher mode: CBC Key exchange: DHE_RSA Key exchange strength: 2048 bits Forward secrecy: Yes PRF: SHA TLS_DHE_RSA_WITH_AES_128_CBC_SHA 128 bits (DHE 2048 bits) Suite: TLS_DHE_RSA_WITH_AES_256_CBC_SHA Suite ID: 0x39 Cipher name: AES Cipher strength: 256 bits Cipher block size: 128 bits Cipher mode: CBC Key exchange: DHE_RSA Key exchange strength: 2048 bits Forward secrecy: Yes PRF: SHA TLS_DHE_RSA_WITH_AES_256_CBC_SHA 256 bits (DHE 2048 bits) Suite: TLS_RSA_WITH_ARIA_128_GCM_SHA256 Suite ID: 0xc050 Cipher name: ARIA Cipher strength: 128 bits Cipher block size: 128 bits Cipher mode: AEAD Key exchange: RSA Key exchange strength: 2048 bits Forward secrecy: No (WEAK) PRF: SHA256 TLS_RSA_WITH_ARIA_128_GCM_SHA256 128 bits Suite: TLS_RSA_WITH_ARIA_256_GCM_SHA384 Suite ID: 0xc051 Cipher name: ARIA Cipher strength: 256 bits Cipher block size: 128 bits Cipher mode: AEAD Key exchange: RSA Key exchange strength: 2048 bits Forward secrecy: No (WEAK) PRF: SHA384 TLS_RSA_WITH_ARIA_256_GCM_SHA384 256 bits Suite: TLS_DHE_RSA_WITH_ARIA_128_GCM_SHA256 Suite ID: 0xc052 Cipher name: ARIA Cipher strength: 128 bits Cipher block size: 128 bits Cipher mode: AEAD Key exchange: DHE_RSA Key exchange strength: 2048 bits Forward secrecy: Yes PRF: SHA256 TLS_DHE_RSA_WITH_ARIA_128_GCM_SHA256 128 bits (DHE 2048 bits) Suite: TLS_DHE_RSA_WITH_ARIA_256_GCM_SHA384 Suite ID: 0xc053 Cipher name: ARIA Cipher strength: 256 bits Cipher block size: 128 bits Cipher mode: AEAD Key exchange: DHE_RSA Key exchange strength: 2048 bits Forward secrecy: Yes PRF: SHA384 TLS_DHE_RSA_WITH_ARIA_256_GCM_SHA384 256 bits (DHE 2048 bits) Suite: TLS_ECDHE_RSA_WITH_ARIA_128_GCM_SHA256 Suite ID: 0xc060 Cipher name: ARIA Cipher strength: 128 bits Cipher block size: 128 bits Cipher mode: AEAD Key exchange: ECDHE_RSA Key exchange strength: EC ecdh_x25519 (256 bits) Forward secrecy: Yes PRF: SHA256 TLS_ECDHE_RSA_WITH_ARIA_128_GCM_SHA256 128 bits (ECDHE 256 bits) Suite: TLS_ECDHE_RSA_WITH_ARIA_256_GCM_SHA384 Suite ID: 0xc061 Cipher name: ARIA Cipher strength: 256 bits Cipher block size: 128 bits Cipher mode: AEAD Key exchange: ECDHE_RSA Key exchange strength: EC ecdh_x25519 (256 bits) Forward secrecy: Yes PRF: SHA384 TLS_ECDHE_RSA_WITH_ARIA_256_GCM_SHA384 256 bits (ECDHE 256 bits) Suite: TLS_DHE_RSA_WITH_AES_128_CBC_SHA256 Suite ID: 0x67 Cipher name: AES Cipher strength: 128 bits Cipher block size: 128 bits Cipher mode: CBC Key exchange: DHE_RSA Key exchange strength: 2048 bits Forward secrecy: Yes PRF: SHA256 TLS_DHE_RSA_WITH_AES_128_CBC_SHA256 128 bits (DHE 2048 bits) Suite: TLS_DHE_RSA_WITH_AES_256_CBC_SHA256 Suite ID: 0x6b Cipher name: AES Cipher strength: 256 bits Cipher block size: 128 bits Cipher mode: CBC Key exchange: DHE_RSA Key exchange strength: 2048 bits Forward secrecy: Yes PRF: SHA256 TLS_DHE_RSA_WITH_AES_256_CBC_SHA256 256 bits (DHE 2048 bits) Suite: TLS_RSA_WITH_AES_128_CCM Suite ID: 0xc09c Cipher name: AES Cipher strength: 128 bits Cipher block size: 128 bits Cipher mode: AEAD Key exchange: RSA Key exchange strength: 2048 bits Forward secrecy: No (WEAK) PRF: SHA256 TLS_RSA_WITH_AES_128_CCM 128 bits Suite: TLS_RSA_WITH_AES_256_CCM Suite ID: 0xc09d Cipher name: AES Cipher strength: 256 bits Cipher block size: 128 bits Cipher mode: AEAD Key exchange: RSA Key exchange strength: 2048 bits Forward secrecy: No (WEAK) PRF: SHA256 TLS_RSA_WITH_AES_256_CCM 256 bits Suite: TLS_DHE_RSA_WITH_AES_128_GCM_SHA256 Suite ID: 0x9e Cipher name: AES Cipher strength: 128 bits Cipher block size: 128 bits Cipher mode: AEAD Key exchange: DHE_RSA Key exchange strength: 2048 bits Forward secrecy: Yes PRF: SHA256 TLS_DHE_RSA_WITH_AES_128_GCM_SHA256 128 bits (DHE 2048 bits) Suite: TLS_DHE_RSA_WITH_AES_128_CCM Suite ID: 0xc09e Cipher name: AES Cipher strength: 128 bits Cipher block size: 128 bits Cipher mode: AEAD Key exchange: DHE_RSA Key exchange strength: 2048 bits Forward secrecy: Yes PRF: SHA256 TLS_DHE_RSA_WITH_AES_128_CCM 128 bits (DHE 2048 bits) Suite: TLS_DHE_RSA_WITH_AES_256_GCM_SHA384 Suite ID: 0x9f Cipher name: AES Cipher strength: 256 bits Cipher block size: 128 bits Cipher mode: AEAD Key exchange: DHE_RSA Key exchange strength: 2048 bits Forward secrecy: Yes PRF: SHA384 TLS_DHE_RSA_WITH_AES_256_GCM_SHA384 256 bits (DHE 2048 bits) Suite: TLS_DHE_RSA_WITH_AES_256_CCM Suite ID: 0xc09f Cipher name: AES Cipher strength: 256 bits Cipher block size: 128 bits Cipher mode: AEAD Key exchange: DHE_RSA Key exchange strength: 2048 bits Forward secrecy: Yes PRF: SHA256 TLS_DHE_RSA_WITH_AES_256_CCM 256 bits (DHE 2048 bits) Suite: TLS_RSA_WITH_AES_128_CCM_8 Suite ID: 0xc0a0 Cipher name: AES Cipher strength: 128 bits Cipher block size: 128 bits Cipher mode: AEAD Key exchange: RSA Key exchange strength: 2048 bits Forward secrecy: No (WEAK) PRF: SHA256 TLS_RSA_WITH_AES_128_CCM_8 128 bits Suite: TLS_RSA_WITH_AES_256_CCM_8 Suite ID: 0xc0a1 Cipher name: AES Cipher strength: 256 bits Cipher block size: 128 bits Cipher mode: AEAD Key exchange: RSA Key exchange strength: 2048 bits Forward secrecy: No (WEAK) PRF: SHA256 TLS_RSA_WITH_AES_256_CCM_8 256 bits Suite: TLS_DHE_RSA_WITH_AES_128_CCM_8 Suite ID: 0xc0a2 Cipher name: AES Cipher strength: 128 bits Cipher block size: 128 bits Cipher mode: AEAD Key exchange: DHE_RSA Key exchange strength: 2048 bits Forward secrecy: Yes PRF: SHA256 TLS_DHE_RSA_WITH_AES_128_CCM_8 128 bits (DHE 2048 bits) Suite: TLS_DHE_RSA_WITH_AES_256_CCM_8 Suite ID: 0xc0a3 Cipher name: AES Cipher strength: 256 bits Cipher block size: 128 bits Cipher mode: AEAD Key exchange: DHE_RSA Key exchange strength: 2048 bits Forward secrecy: Yes PRF: SHA256 TLS_DHE_RSA_WITH_AES_256_CCM_8 256 bits (DHE 2048 bits)
Shows cipher suite configuration for this protocol version.TLS v1.1 Unknown preference	Suite: TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA Suite ID: 0xc013 Cipher name: AES Cipher strength: 128 bits Cipher block size: 128 bits Cipher mode: CBC Key exchange: ECDHE_RSA Key exchange strength: EC ecdh_x25519 (256 bits) Forward secrecy: Yes PRF: SHA TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA 128 bits (ECDHE 256 bits) Suite: TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA Suite ID: 0xc014 Cipher name: AES Cipher strength: 256 bits Cipher block size: 128 bits Cipher mode: CBC Key exchange: ECDHE_RSA Key exchange strength: EC ecdh_x25519 (256 bits) Forward secrecy: Yes PRF: SHA TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA 256 bits (ECDHE 256 bits) Suite: TLS_DHE_RSA_WITH_AES_128_CBC_SHA Suite ID: 0x33 Cipher name: AES Cipher strength: 128 bits Cipher block size: 128 bits Cipher mode: CBC Key exchange: DHE_RSA Key exchange strength: 2048 bits Forward secrecy: Yes PRF: SHA TLS_DHE_RSA_WITH_AES_128_CBC_SHA 128 bits (DHE 2048 bits) Suite: TLS_DHE_RSA_WITH_AES_256_CBC_SHA Suite ID: 0x39 Cipher name: AES Cipher strength: 256 bits Cipher block size: 128 bits Cipher mode: CBC Key exchange: DHE_RSA Key exchange strength: 2048 bits Forward secrecy: Yes PRF: SHA TLS_DHE_RSA_WITH_AES_256_CBC_SHA 256 bits (DHE 2048 bits)

Analysis

TLS 1.2 supported

Good. This server supports TLS 1.2, which can provide strong security when configured correctly. This version of the TLS protocol is necessary to provide good security with a wide range of clients that don't yet support TLS 1.3.

Server doesn't enforce cipher suite preferences

Servers that don't enforce cipher suite preferences select the first cipher suite they support from the list provided by clients. This approach doesn't guarantee that best-possible cipher suite is negotiated.

Strong key exchange detected

Excellent. All cipher suites on this server rely on strong key exchange. The sweet spot is 2048 bits for DHE and 256 bits for ECDHE. Putting ECDHE suites first guarantees best security and best performance.

Server prefers forward secrecy and authenticated encryption suites

Excellent. Not only does this server enforce its server preference, but it also has at the top of the list suites that support both forward secrecy and authenticated encryption. This is the best TLS 1.2 can offer.

Relaxed TLS assessment criteria applied to SMTP on port 25

We apply relaxed assessment criteria when evaluating TLS configuration of SMTP servers on port 25. This is because most delivery agents fall back to delivering via plaintext on failure to negotiate encryption. Some configuration elements that can be abused to attack other ports and protocols (e.g., SSLv2 and export cipher suites) are penalized in the same way as for other protocols. We will review this policy in the future.

DHE server parameter not reused

This server does not reuse the private value used for the Diffie-Hellman key exchange.

TLS Configuration: mx1.simplelogin.co (94.237.111.15)

Encryption protocol version determines what features are available for negotiation between client and server.Supported protocols	TLS v1.3 TLS v1.2 TLS v1.1
Servers should always enforce their own cipher suite preference, as that is the only approach that guarantees that the best possible suite is selected.Server suite preference
Shows cipher suite configuration for this protocol version.TLS v1.3 Unknown preference	Suite: TLS_CHACHA20_POLY1305_SHA256 Suite ID: 0x1303 Cipher name: CHACHA20 Cipher strength: 256 bits Cipher mode: AEAD Key exchange: ecdh_x25519 Key exchange strength: EC ecdh_x25519 (256 bits) Forward secrecy: Yes PRF: SHA256 TLS_CHACHA20_POLY1305_SHA256 256 bits (ECDHE 256 bits) Suite: TLS_AES_128_GCM_SHA256 Suite ID: 0x1301 Cipher name: AES Cipher strength: 128 bits Cipher block size: 128 bits Cipher mode: AEAD Key exchange: ecdh_x25519 Key exchange strength: EC ecdh_x25519 (256 bits) Forward secrecy: Yes PRF: SHA256 TLS_AES_128_GCM_SHA256 128 bits (ECDHE 256 bits) Suite: TLS_AES_256_GCM_SHA384 Suite ID: 0x1302 Cipher name: AES Cipher strength: 256 bits Cipher block size: 128 bits Cipher mode: AEAD Key exchange: ecdh_x25519 Key exchange strength: EC ecdh_x25519 (256 bits) Forward secrecy: Yes PRF: SHA384 TLS_AES_256_GCM_SHA384 256 bits (ECDHE 256 bits)
Shows cipher suite configuration for this protocol version.TLS v1.2 Unknown preference	Suite: TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256 Suite ID: 0xcca8 Cipher name: CHACHA20 Cipher strength: 256 bits Cipher mode: AEAD Key exchange: ECDHE_RSA Key exchange strength: EC ecdh_x25519 (256 bits) Forward secrecy: Yes PRF: SHA256 TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256 256 bits (ECDHE 256 bits) Suite: TLS_DHE_RSA_WITH_CHACHA20_POLY1305_SHA256 Suite ID: 0xccaa Cipher name: CHACHA20 Cipher strength: 256 bits Cipher mode: AEAD Key exchange: DHE_RSA Key exchange strength: 2048 bits Forward secrecy: Yes PRF: SHA256 TLS_DHE_RSA_WITH_CHACHA20_POLY1305_SHA256 256 bits (DHE 2048 bits) Suite: TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA Suite ID: 0xc013 Cipher name: AES Cipher strength: 128 bits Cipher block size: 128 bits Cipher mode: CBC Key exchange: ECDHE_RSA Key exchange strength: EC ecdh_x25519 (256 bits) Forward secrecy: Yes PRF: SHA TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA 128 bits (ECDHE 256 bits) Suite: TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA Suite ID: 0xc014 Cipher name: AES Cipher strength: 256 bits Cipher block size: 128 bits Cipher mode: CBC Key exchange: ECDHE_RSA Key exchange strength: EC ecdh_x25519 (256 bits) Forward secrecy: Yes PRF: SHA TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA 256 bits (ECDHE 256 bits) Suite: TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256 Suite ID: 0xc027 Cipher name: AES Cipher strength: 128 bits Cipher block size: 128 bits Cipher mode: CBC Key exchange: ECDHE_RSA Key exchange strength: EC ecdh_x25519 (256 bits) Forward secrecy: Yes PRF: SHA256 TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256 128 bits (ECDHE 256 bits) Suite: TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384 Suite ID: 0xc028 Cipher name: AES Cipher strength: 256 bits Cipher block size: 128 bits Cipher mode: CBC Key exchange: ECDHE_RSA Key exchange strength: EC ecdh_x25519 (256 bits) Forward secrecy: Yes PRF: SHA384 TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384 256 bits (ECDHE 256 bits) Suite: TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256 Suite ID: 0xc02f Cipher name: AES Cipher strength: 128 bits Cipher block size: 128 bits Cipher mode: AEAD Key exchange: ECDHE_RSA Key exchange strength: EC ecdh_x25519 (256 bits) Forward secrecy: Yes PRF: SHA256 TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256 128 bits (ECDHE 256 bits) Suite: TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 Suite ID: 0xc030 Cipher name: AES Cipher strength: 256 bits Cipher block size: 128 bits Cipher mode: AEAD Key exchange: ECDHE_RSA Key exchange strength: EC ecdh_x25519 (256 bits) Forward secrecy: Yes PRF: SHA384 TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 256 bits (ECDHE 256 bits) Suite: TLS_DHE_RSA_WITH_AES_128_CBC_SHA Suite ID: 0x33 Cipher name: AES Cipher strength: 128 bits Cipher block size: 128 bits Cipher mode: CBC Key exchange: DHE_RSA Key exchange strength: 2048 bits Forward secrecy: Yes PRF: SHA TLS_DHE_RSA_WITH_AES_128_CBC_SHA 128 bits (DHE 2048 bits) Suite: TLS_DHE_RSA_WITH_AES_256_CBC_SHA Suite ID: 0x39 Cipher name: AES Cipher strength: 256 bits Cipher block size: 128 bits Cipher mode: CBC Key exchange: DHE_RSA Key exchange strength: 2048 bits Forward secrecy: Yes PRF: SHA TLS_DHE_RSA_WITH_AES_256_CBC_SHA 256 bits (DHE 2048 bits) Suite: TLS_RSA_WITH_ARIA_128_GCM_SHA256 Suite ID: 0xc050 Cipher name: ARIA Cipher strength: 128 bits Cipher block size: 128 bits Cipher mode: AEAD Key exchange: RSA Key exchange strength: 2048 bits Forward secrecy: No (WEAK) PRF: SHA256 TLS_RSA_WITH_ARIA_128_GCM_SHA256 128 bits Suite: TLS_RSA_WITH_ARIA_256_GCM_SHA384 Suite ID: 0xc051 Cipher name: ARIA Cipher strength: 256 bits Cipher block size: 128 bits Cipher mode: AEAD Key exchange: RSA Key exchange strength: 2048 bits Forward secrecy: No (WEAK) PRF: SHA384 TLS_RSA_WITH_ARIA_256_GCM_SHA384 256 bits Suite: TLS_DHE_RSA_WITH_ARIA_128_GCM_SHA256 Suite ID: 0xc052 Cipher name: ARIA Cipher strength: 128 bits Cipher block size: 128 bits Cipher mode: AEAD Key exchange: DHE_RSA Key exchange strength: 2048 bits Forward secrecy: Yes PRF: SHA256 TLS_DHE_RSA_WITH_ARIA_128_GCM_SHA256 128 bits (DHE 2048 bits) Suite: TLS_DHE_RSA_WITH_ARIA_256_GCM_SHA384 Suite ID: 0xc053 Cipher name: ARIA Cipher strength: 256 bits Cipher block size: 128 bits Cipher mode: AEAD Key exchange: DHE_RSA Key exchange strength: 2048 bits Forward secrecy: Yes PRF: SHA384 TLS_DHE_RSA_WITH_ARIA_256_GCM_SHA384 256 bits (DHE 2048 bits) Suite: TLS_ECDHE_RSA_WITH_ARIA_128_GCM_SHA256 Suite ID: 0xc060 Cipher name: ARIA Cipher strength: 128 bits Cipher block size: 128 bits Cipher mode: AEAD Key exchange: ECDHE_RSA Key exchange strength: EC ecdh_x25519 (256 bits) Forward secrecy: Yes PRF: SHA256 TLS_ECDHE_RSA_WITH_ARIA_128_GCM_SHA256 128 bits (ECDHE 256 bits) Suite: TLS_ECDHE_RSA_WITH_ARIA_256_GCM_SHA384 Suite ID: 0xc061 Cipher name: ARIA Cipher strength: 256 bits Cipher block size: 128 bits Cipher mode: AEAD Key exchange: ECDHE_RSA Key exchange strength: EC ecdh_x25519 (256 bits) Forward secrecy: Yes PRF: SHA384 TLS_ECDHE_RSA_WITH_ARIA_256_GCM_SHA384 256 bits (ECDHE 256 bits) Suite: TLS_DHE_RSA_WITH_AES_128_CBC_SHA256 Suite ID: 0x67 Cipher name: AES Cipher strength: 128 bits Cipher block size: 128 bits Cipher mode: CBC Key exchange: DHE_RSA Key exchange strength: 2048 bits Forward secrecy: Yes PRF: SHA256 TLS_DHE_RSA_WITH_AES_128_CBC_SHA256 128 bits (DHE 2048 bits) Suite: TLS_DHE_RSA_WITH_AES_256_CBC_SHA256 Suite ID: 0x6b Cipher name: AES Cipher strength: 256 bits Cipher block size: 128 bits Cipher mode: CBC Key exchange: DHE_RSA Key exchange strength: 2048 bits Forward secrecy: Yes PRF: SHA256 TLS_DHE_RSA_WITH_AES_256_CBC_SHA256 256 bits (DHE 2048 bits) Suite: TLS_RSA_WITH_AES_128_CCM Suite ID: 0xc09c Cipher name: AES Cipher strength: 128 bits Cipher block size: 128 bits Cipher mode: AEAD Key exchange: RSA Key exchange strength: 2048 bits Forward secrecy: No (WEAK) PRF: SHA256 TLS_RSA_WITH_AES_128_CCM 128 bits Suite: TLS_RSA_WITH_AES_256_CCM Suite ID: 0xc09d Cipher name: AES Cipher strength: 256 bits Cipher block size: 128 bits Cipher mode: AEAD Key exchange: RSA Key exchange strength: 2048 bits Forward secrecy: No (WEAK) PRF: SHA256 TLS_RSA_WITH_AES_256_CCM 256 bits Suite: TLS_DHE_RSA_WITH_AES_128_GCM_SHA256 Suite ID: 0x9e Cipher name: AES Cipher strength: 128 bits Cipher block size: 128 bits Cipher mode: AEAD Key exchange: DHE_RSA Key exchange strength: 2048 bits Forward secrecy: Yes PRF: SHA256 TLS_DHE_RSA_WITH_AES_128_GCM_SHA256 128 bits (DHE 2048 bits) Suite: TLS_DHE_RSA_WITH_AES_128_CCM Suite ID: 0xc09e Cipher name: AES Cipher strength: 128 bits Cipher block size: 128 bits Cipher mode: AEAD Key exchange: DHE_RSA Key exchange strength: 2048 bits Forward secrecy: Yes PRF: SHA256 TLS_DHE_RSA_WITH_AES_128_CCM 128 bits (DHE 2048 bits) Suite: TLS_DHE_RSA_WITH_AES_256_GCM_SHA384 Suite ID: 0x9f Cipher name: AES Cipher strength: 256 bits Cipher block size: 128 bits Cipher mode: AEAD Key exchange: DHE_RSA Key exchange strength: 2048 bits Forward secrecy: Yes PRF: SHA384 TLS_DHE_RSA_WITH_AES_256_GCM_SHA384 256 bits (DHE 2048 bits) Suite: TLS_DHE_RSA_WITH_AES_256_CCM Suite ID: 0xc09f Cipher name: AES Cipher strength: 256 bits Cipher block size: 128 bits Cipher mode: AEAD Key exchange: DHE_RSA Key exchange strength: 2048 bits Forward secrecy: Yes PRF: SHA256 TLS_DHE_RSA_WITH_AES_256_CCM 256 bits (DHE 2048 bits) Suite: TLS_RSA_WITH_AES_128_CCM_8 Suite ID: 0xc0a0 Cipher name: AES Cipher strength: 128 bits Cipher block size: 128 bits Cipher mode: AEAD Key exchange: RSA Key exchange strength: 2048 bits Forward secrecy: No (WEAK) PRF: SHA256 TLS_RSA_WITH_AES_128_CCM_8 128 bits Suite: TLS_RSA_WITH_AES_256_CCM_8 Suite ID: 0xc0a1 Cipher name: AES Cipher strength: 256 bits Cipher block size: 128 bits Cipher mode: AEAD Key exchange: RSA Key exchange strength: 2048 bits Forward secrecy: No (WEAK) PRF: SHA256 TLS_RSA_WITH_AES_256_CCM_8 256 bits Suite: TLS_DHE_RSA_WITH_AES_128_CCM_8 Suite ID: 0xc0a2 Cipher name: AES Cipher strength: 128 bits Cipher block size: 128 bits Cipher mode: AEAD Key exchange: DHE_RSA Key exchange strength: 2048 bits Forward secrecy: Yes PRF: SHA256 TLS_DHE_RSA_WITH_AES_128_CCM_8 128 bits (DHE 2048 bits) Suite: TLS_DHE_RSA_WITH_AES_256_CCM_8 Suite ID: 0xc0a3 Cipher name: AES Cipher strength: 256 bits Cipher block size: 128 bits Cipher mode: AEAD Key exchange: DHE_RSA Key exchange strength: 2048 bits Forward secrecy: Yes PRF: SHA256 TLS_DHE_RSA_WITH_AES_256_CCM_8 256 bits (DHE 2048 bits)
Shows cipher suite configuration for this protocol version.TLS v1.1 Unknown preference	Suite: TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA Suite ID: 0xc013 Cipher name: AES Cipher strength: 128 bits Cipher block size: 128 bits Cipher mode: CBC Key exchange: ECDHE_RSA Key exchange strength: EC ecdh_x25519 (256 bits) Forward secrecy: Yes PRF: SHA TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA 128 bits (ECDHE 256 bits) Suite: TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA Suite ID: 0xc014 Cipher name: AES Cipher strength: 256 bits Cipher block size: 128 bits Cipher mode: CBC Key exchange: ECDHE_RSA Key exchange strength: EC ecdh_x25519 (256 bits) Forward secrecy: Yes PRF: SHA TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA 256 bits (ECDHE 256 bits) Suite: TLS_DHE_RSA_WITH_AES_128_CBC_SHA Suite ID: 0x33 Cipher name: AES Cipher strength: 128 bits Cipher block size: 128 bits Cipher mode: CBC Key exchange: DHE_RSA Key exchange strength: 2048 bits Forward secrecy: Yes PRF: SHA TLS_DHE_RSA_WITH_AES_128_CBC_SHA 128 bits (DHE 2048 bits) Suite: TLS_DHE_RSA_WITH_AES_256_CBC_SHA Suite ID: 0x39 Cipher name: AES Cipher strength: 256 bits Cipher block size: 128 bits Cipher mode: CBC Key exchange: DHE_RSA Key exchange strength: 2048 bits Forward secrecy: Yes PRF: SHA TLS_DHE_RSA_WITH_AES_256_CBC_SHA 256 bits (DHE 2048 bits)

Analysis

TLS 1.2 supported

Good. This server supports TLS 1.2, which can provide strong security when configured correctly. This version of the TLS protocol is necessary to provide good security with a wide range of clients that don't yet support TLS 1.3.

Server doesn't enforce cipher suite preferences

Servers that don't enforce cipher suite preferences select the first cipher suite they support from the list provided by clients. This approach doesn't guarantee that best-possible cipher suite is negotiated.

Strong key exchange detected

Excellent. All cipher suites on this server rely on strong key exchange. The sweet spot is 2048 bits for DHE and 256 bits for ECDHE. Putting ECDHE suites first guarantees best security and best performance.

Server prefers forward secrecy and authenticated encryption suites

Excellent. Not only does this server enforce its server preference, but it also has at the top of the list suites that support both forward secrecy and authenticated encryption. This is the best TLS 1.2 can offer.

Relaxed TLS assessment criteria applied to SMTP on port 25

We apply relaxed assessment criteria when evaluating TLS configuration of SMTP servers on port 25. This is because most delivery agents fall back to delivering via plaintext on failure to negotiate encryption. Some configuration elements that can be abused to attack other ports and protocols (e.g., SSLv2 and export cipher suites) are penalized in the same way as for other protocols. We will review this policy in the future.

DHE server parameter not reused

This server does not reuse the private value used for the Diffie-Hellman key exchange.

Email Certificates (SMTP)

A certificate is a digital document that contains a public key, some information about the entity associated with it, and a digital signature from the certificate issuer. It’s a mechanism that enables us to exchange, store, and use public keys. Being able to reliably verify the identity of a remote server is crucial in order to achieve secure encrypted communication.

Test passed

Everything seems to be well configured. Well done.

Certificate #1

Leaf certificate

*.simplelogin.io
Issuer: Let's Encrypt
Not Before: 17 Mar 2021 17:56:02 UTC
Not After: 15 Jun 2021 17:56:02 UTC (expires in 2 months 9 days)
Key: RSA 2048 bits
Signature: SHA256withRSA
View details

Names	.simplelogin.co .simplelogin.fr .simplelogin.io .slmail.me simplelogin.co simplelogin.fr simplelogin.io slmail.me
Subject DN	CN=*.simplelogin.io
Subject Key Identifier	64661349da26902029f8fa5d77cbea733702ce11
Serial	3e0d5ca0294c3b1dd7f43582ac4cf994761
Not Before	17 Mar 2021 17:56:02 UTC
Not After	15 Jun 2021 17:56:02 UTC
Validity period	91 days
Key Usage	digitalSignature, keyEncipherment
Extended Key Usage	serverAuth, clientAuth
Must Staple	No
Issuer
Issuer DN	CN=R3, O=Let's Encrypt, C=US
Certification Authority	Let's Encrypt
Validation Type	Domain Validation (DV)
Authority Key Identifier	keyid:142eb317b75856cbae500940e61faf9d8b14c2c6
Parent Certificate	http://r3.i.lencr.org/
OCSP	http://r3.o.lencr.org
Certificate Transparency
Signed Certificate Timestamps	17 Mar 2021 18:56:02 UTC \| Cloudflare 'Nimbus2021' Log \| Non-Google (Qualified) 17 Mar 2021 18:56:02 UTC \| Google 'Argon2021' log \| Google (Qualified)
Required SCTs	2
Fingerprints
SHA1	c35405b619cc93a10fed4247dc68bda71bfefcb3
SHA256	69e773451c944c28ff941ca37a433fc038f3cb11154b46d9f3d1de07e21523b0
SPKI SHA256	83c5f3574368d4716d6142c25a90c9cb61fee3c1e66ce9fa547d02f6d6c80787

Analysis

Strong private key

Good. The private key associated with this certificate is secure.

Strong signature algorithm

Good. This certificate uses a strong signature algorithm.

Certificate matches hostname

Good. The provided certificate matches the expected hostnames.

Certificate dates match

Good. The certificate is valid for use at this point of time.

Certificate has not been revoked

Good. This certificate has not been revoked.

Certificate satisfies Chrome's CT requirements

This certificate contains embedded CT signatures and satisfies Chrome's CT requirements at this time.

Certificate Chain

Leaf certificate

*.simplelogin.io | 69e7734
Not After: 15 Jun 2021 17:56:02 UTC (expires in 2 months 9 days)
Authentication: RSA 2048 bits (SHA256withRSA)
View details

Names	.simplelogin.co .simplelogin.fr .simplelogin.io .slmail.me simplelogin.co simplelogin.fr simplelogin.io slmail.me
Subject DN	CN=*.simplelogin.io
Subject Key Identifier	64661349da26902029f8fa5d77cbea733702ce11
Serial	3e0d5ca0294c3b1dd7f43582ac4cf994761
Not Before	17 Mar 2021 17:56:02 UTC
Not After	15 Jun 2021 17:56:02 UTC
Validity period	91 days
Key Usage	digitalSignature, keyEncipherment
Extended Key Usage	serverAuth, clientAuth
Must Staple	No
Issuer
Issuer DN	CN=R3, O=Let's Encrypt, C=US
Certification Authority	Let's Encrypt
Validation Type	Domain Validation (DV)
Authority Key Identifier	keyid:142eb317b75856cbae500940e61faf9d8b14c2c6
Parent Certificate	http://r3.i.lencr.org/
OCSP	http://r3.o.lencr.org
Certificate Transparency
Signed Certificate Timestamps	17 Mar 2021 18:56:02 UTC \| Cloudflare 'Nimbus2021' Log \| Non-Google (Qualified) 17 Mar 2021 18:56:02 UTC \| Google 'Argon2021' log \| Google (Qualified)
Required SCTs	2
Fingerprints
SHA1	c35405b619cc93a10fed4247dc68bda71bfefcb3
SHA256	69e773451c944c28ff941ca37a433fc038f3cb11154b46d9f3d1de07e21523b0
SPKI SHA256	83c5f3574368d4716d6142c25a90c9cb61fee3c1e66ce9fa547d02f6d6c80787

Intermediate certificate

R3 | 730c1bd
Not After: 29 Sep 2021 19:21:40 UTC (expires in 5 months 23 days)
Authentication: RSA 2048 bits (SHA256withRSA)
View details

Subject DN	CN=R3, O=Let's Encrypt, C=US
Subject Key Identifier	142eb317b75856cbae500940e61faf9d8b14c2c6
Serial	400175048314a4c8218c84a90c16cddf
Not Before	07 Oct 2020 19:21:40 UTC
Not After	29 Sep 2021 19:21:40 UTC
Validity period	358 days
Key Usage	digitalSignature, keyCertSign, cRLSign
Extended Key Usage	serverAuth, clientAuth
Issuer
Issuer DN	CN=DST Root CA X3, O=Digital Signature Trust Co.
Certification Authority	IdenTrust Services, LLC
Validation Type	Not Applicable
Authority Key Identifier	keyid:c4a7b1a47b2c71fadbe14b9075ffc41560858910
Parent Certificate	http://apps.identrust.com/roots/dstrootcax3.p7c
CRL	http://crl.identrust.com/DSTROOTCAX3CRL.crl
CA certificate	Yes (pathlen 0)
Fingerprints
SHA1	48504e974c0dac5b5cd476c8202274b24c8c7172
SHA256	730c1bdcd85f57ce5dc0bba733e5f1ba5a925b2a771d640a26f7a454224dad3b
SPKI SHA256	8d02536c887482bc34ff54e41d2ba659bf85b341a0a20afadb5813dcfbcf286d

Root certificate

DST Root CA X3 | 0687260
Not After: 30 Sep 2021 14:01:15 UTC (expires in 5 months 24 days)
Authentication: RSA 2048 bits (SHA1withRSA)
View details

Subject DN	CN=DST Root CA X3, O=Digital Signature Trust Co.
Subject Key Identifier	c4a7b1a47b2c71fadbe14b9075ffc41560858910
Serial	44afb080d6a327ba893039862ef8406b
Not Before	30 Sep 2000 21:12:19 UTC
Not After	30 Sep 2021 14:01:15 UTC
Key Usage	keyCertSign, cRLSign
Issuer
Issuer DN	CN=DST Root CA X3, O=Digital Signature Trust Co.
Certification Authority	IdenTrust Services, LLC
Validation Type	Self-signed
CA certificate	Yes (pathlen unlimited)
Fingerprints
SHA1	dac9024f54d8f6df94935fb1732638ca6ad77c13
SHA256	0687260331a72403d909f105e69bcf0d32e1bd2493ffc6d9206d11bcd6770739
SPKI SHA256	563b3caf8cfef34c2335caf560a7a95906e8488462eb75ac59784830df9e5b2b

Analysis

Certificate chain is correct

Good. This chain contains all the right certificates and in the right order.

Certificate #2

Leaf certificate

*.simplelogin.io
Issuer: Let's Encrypt
Not Before: 30 Mar 2021 05:19:54 UTC
Not After: 28 Jun 2021 05:19:54 UTC (expires in 2 months 21 days)
Key: RSA 2048 bits
Signature: SHA256withRSA
View details

Names	.simplelogin.co .simplelogin.fr .simplelogin.io .slmail.me simplelogin.co simplelogin.fr simplelogin.io slmail.me
Subject DN	CN=*.simplelogin.io
Subject Key Identifier	3c66d919b4b52af79dd9c2030ae0a8a82396cbe4
Serial	32a44d5838dd1eb97a64afa43ce74e03049
Not Before	30 Mar 2021 05:19:54 UTC
Not After	28 Jun 2021 05:19:54 UTC
Validity period	91 days
Key Usage	digitalSignature, keyEncipherment
Extended Key Usage	serverAuth, clientAuth
Must Staple	No
Issuer
Issuer DN	CN=R3, O=Let's Encrypt, C=US
Certification Authority	Let's Encrypt
Validation Type	Domain Validation (DV)
Authority Key Identifier	keyid:142eb317b75856cbae500940e61faf9d8b14c2c6
Parent Certificate	http://r3.i.lencr.org/
OCSP	http://r3.o.lencr.org
Certificate Transparency
Signed Certificate Timestamps	30 Mar 2021 06:19:54 UTC \| Let's Encrypt 'Oak2021' log \| Non-Google (Qualified) 30 Mar 2021 06:19:54 UTC \| Google 'Xenon2021' log \| Google (Qualified)
Required SCTs	2
Fingerprints
SHA1	391bdfe5df588f72d1e2783f3ae7d034e15b865e
SHA256	67df910aee2f6b344bc608f12dc7c92aeff5e1c8d84caae64a1465f65b2ac06e
SPKI SHA256	e1d82616cbbb2997fc2a545f5b2e19803bc7a216c38b94e3ebe4c11921c18aba

Analysis

Strong private key

Good. The private key associated with this certificate is secure.

Strong signature algorithm

Good. This certificate uses a strong signature algorithm.

Certificate matches hostname

Good. The provided certificate matches the expected hostnames.

Certificate dates match

Good. The certificate is valid for use at this point of time.

Certificate has not been revoked

Good. This certificate has not been revoked.

Certificate satisfies Chrome's CT requirements

This certificate contains embedded CT signatures and satisfies Chrome's CT requirements at this time.

Certificate Chain

Leaf certificate

*.simplelogin.io | 67df910
Not After: 28 Jun 2021 05:19:54 UTC (expires in 2 months 21 days)
Authentication: RSA 2048 bits (SHA256withRSA)
View details

Names	.simplelogin.co .simplelogin.fr .simplelogin.io .slmail.me simplelogin.co simplelogin.fr simplelogin.io slmail.me
Subject DN	CN=*.simplelogin.io
Subject Key Identifier	3c66d919b4b52af79dd9c2030ae0a8a82396cbe4
Serial	32a44d5838dd1eb97a64afa43ce74e03049
Not Before	30 Mar 2021 05:19:54 UTC
Not After	28 Jun 2021 05:19:54 UTC
Validity period	91 days
Key Usage	digitalSignature, keyEncipherment
Extended Key Usage	serverAuth, clientAuth
Must Staple	No
Issuer
Issuer DN	CN=R3, O=Let's Encrypt, C=US
Certification Authority	Let's Encrypt
Validation Type	Domain Validation (DV)
Authority Key Identifier	keyid:142eb317b75856cbae500940e61faf9d8b14c2c6
Parent Certificate	http://r3.i.lencr.org/
OCSP	http://r3.o.lencr.org
Certificate Transparency
Signed Certificate Timestamps	30 Mar 2021 06:19:54 UTC \| Let's Encrypt 'Oak2021' log \| Non-Google (Qualified) 30 Mar 2021 06:19:54 UTC \| Google 'Xenon2021' log \| Google (Qualified)
Required SCTs	2
Fingerprints
SHA1	391bdfe5df588f72d1e2783f3ae7d034e15b865e
SHA256	67df910aee2f6b344bc608f12dc7c92aeff5e1c8d84caae64a1465f65b2ac06e
SPKI SHA256	e1d82616cbbb2997fc2a545f5b2e19803bc7a216c38b94e3ebe4c11921c18aba

Intermediate certificate

R3 | 730c1bd
Not After: 29 Sep 2021 19:21:40 UTC (expires in 5 months 23 days)
Authentication: RSA 2048 bits (SHA256withRSA)
View details

Subject DN	CN=R3, O=Let's Encrypt, C=US
Subject Key Identifier	142eb317b75856cbae500940e61faf9d8b14c2c6
Serial	400175048314a4c8218c84a90c16cddf
Not Before	07 Oct 2020 19:21:40 UTC
Not After	29 Sep 2021 19:21:40 UTC
Validity period	358 days
Key Usage	digitalSignature, keyCertSign, cRLSign
Extended Key Usage	serverAuth, clientAuth
Issuer
Issuer DN	CN=DST Root CA X3, O=Digital Signature Trust Co.
Certification Authority	IdenTrust Services, LLC
Validation Type	Not Applicable
Authority Key Identifier	keyid:c4a7b1a47b2c71fadbe14b9075ffc41560858910
Parent Certificate	http://apps.identrust.com/roots/dstrootcax3.p7c
CRL	http://crl.identrust.com/DSTROOTCAX3CRL.crl
CA certificate	Yes (pathlen 0)
Fingerprints
SHA1	48504e974c0dac5b5cd476c8202274b24c8c7172
SHA256	730c1bdcd85f57ce5dc0bba733e5f1ba5a925b2a771d640a26f7a454224dad3b
SPKI SHA256	8d02536c887482bc34ff54e41d2ba659bf85b341a0a20afadb5813dcfbcf286d

Root certificate

DST Root CA X3 | 0687260
Not After: 30 Sep 2021 14:01:15 UTC (expires in 5 months 24 days)
Authentication: RSA 2048 bits (SHA1withRSA)
View details

Subject DN	CN=DST Root CA X3, O=Digital Signature Trust Co.
Subject Key Identifier	c4a7b1a47b2c71fadbe14b9075ffc41560858910
Serial	44afb080d6a327ba893039862ef8406b
Not Before	30 Sep 2000 21:12:19 UTC
Not After	30 Sep 2021 14:01:15 UTC
Key Usage	keyCertSign, cRLSign
Issuer
Issuer DN	CN=DST Root CA X3, O=Digital Signature Trust Co.
Certification Authority	IdenTrust Services, LLC
Validation Type	Self-signed
CA certificate	Yes (pathlen unlimited)
Fingerprints
SHA1	dac9024f54d8f6df94935fb1732638ca6ad77c13
SHA256	0687260331a72403d909f105e69bcf0d32e1bd2493ffc6d9206d11bcd6770739
SPKI SHA256	563b3caf8cfef34c2335caf560a7a95906e8488462eb75ac59784830df9e5b2b

Analysis

Certificate chain is correct

Good. This chain contains all the right certificates and in the right order.

Email DANE (SMTP)

DNS-based Authentication of Named Entities (DANE) is a bridge between DNSSEC and TLS. In one possible scenario, DANE can be used for public key pinning, building on an existing publicly-trusted certificate. In another approach, it can be used to completely bypass the CA ecosystem and establish trust using DNSSEC alone.

Test passed

Everything seems to be well configured. Well done.

DANE: mx1.simplelogin.co (2a04:3544:1000:1510:8c7a:9cff:fe3c:4b2c)

Specifies which certificate in the chain is being pinned and how validation should be performed.Certificate Usage	Trust anchor assertion / DANE-TA (2)
Determines if the association is made with a certificate or with a public key (via its SPKI structure).Selector	SPKI structure (1)
Determines how matching is done; directly or via a hash. Matching Type	SHA2-256 (1)
Contains the data necessary to perform the matching. Data	60b87575447dcba2a36b7d11ac09fb24a9db406fee12d2cc90180517616e8a18

Specifies which certificate in the chain is being pinned and how validation should be performed.Certificate Usage	Trust anchor assertion / DANE-TA (2)
Determines if the association is made with a certificate or with a public key (via its SPKI structure).Selector	SPKI structure (1)
Determines how matching is done; directly or via a hash. Matching Type	SHA2-256 (1)
Contains the data necessary to perform the matching. Data	8d02536c887482bc34ff54e41d2ba659bf85b341a0a20afadb5813dcfbcf286d Root certificate: RSA 2048 bits Subject: CN=R3, O=Let's Encrypt, C=US Issuer: CN=DST Root CA X3, O=Digital Signature Trust Co. R3 (RSA 2048 bits)

Analysis

Valid DANE configuration

Excellent. Your DANE configuration matches the certificate chain(s) provided by the service. Your TLS configuration enjoys the additional benefit of DANE validation.

DANE: mx1.simplelogin.co (94.237.111.15)

Specifies which certificate in the chain is being pinned and how validation should be performed.Certificate Usage	Trust anchor assertion / DANE-TA (2)
Determines if the association is made with a certificate or with a public key (via its SPKI structure).Selector	SPKI structure (1)
Determines how matching is done; directly or via a hash. Matching Type	SHA2-256 (1)
Contains the data necessary to perform the matching. Data	60b87575447dcba2a36b7d11ac09fb24a9db406fee12d2cc90180517616e8a18

Specifies which certificate in the chain is being pinned and how validation should be performed.Certificate Usage	Trust anchor assertion / DANE-TA (2)
Determines if the association is made with a certificate or with a public key (via its SPKI structure).Selector	SPKI structure (1)
Determines how matching is done; directly or via a hash. Matching Type	SHA2-256 (1)
Contains the data necessary to perform the matching. Data	8d02536c887482bc34ff54e41d2ba659bf85b341a0a20afadb5813dcfbcf286d Root certificate: RSA 2048 bits Subject: CN=R3, O=Let's Encrypt, C=US Issuer: CN=DST Root CA X3, O=Digital Signature Trust Co. R3 (RSA 2048 bits)

Analysis

Valid DANE configuration

Excellent. Your DANE configuration matches the certificate chain(s) provided by the service. Your TLS configuration enjoys the additional benefit of DANE validation.

DANE: mx2.simplelogin.co (2a04:3544:1000:1510:8c7a:9cff:fe3c:4e55)

Specifies which certificate in the chain is being pinned and how validation should be performed.Certificate Usage	Trust anchor assertion / DANE-TA (2)
Determines if the association is made with a certificate or with a public key (via its SPKI structure).Selector	SPKI structure (1)
Determines how matching is done; directly or via a hash. Matching Type	SHA2-256 (1)
Contains the data necessary to perform the matching. Data	60b87575447dcba2a36b7d11ac09fb24a9db406fee12d2cc90180517616e8a18

Specifies which certificate in the chain is being pinned and how validation should be performed.Certificate Usage	Trust anchor assertion / DANE-TA (2)
Determines if the association is made with a certificate or with a public key (via its SPKI structure).Selector	SPKI structure (1)
Determines how matching is done; directly or via a hash. Matching Type	SHA2-256 (1)
Contains the data necessary to perform the matching. Data	8d02536c887482bc34ff54e41d2ba659bf85b341a0a20afadb5813dcfbcf286d Root certificate: RSA 2048 bits Subject: CN=R3, O=Let's Encrypt, C=US Issuer: CN=DST Root CA X3, O=Digital Signature Trust Co. R3 (RSA 2048 bits)

Analysis

Valid DANE configuration

Excellent. Your DANE configuration matches the certificate chain(s) provided by the service. Your TLS configuration enjoys the additional benefit of DANE validation.

DANE: mx2.simplelogin.co (94.237.125.28)

Specifies which certificate in the chain is being pinned and how validation should be performed.Certificate Usage	Trust anchor assertion / DANE-TA (2)
Determines if the association is made with a certificate or with a public key (via its SPKI structure).Selector	SPKI structure (1)
Determines how matching is done; directly or via a hash. Matching Type	SHA2-256 (1)
Contains the data necessary to perform the matching. Data	60b87575447dcba2a36b7d11ac09fb24a9db406fee12d2cc90180517616e8a18

Specifies which certificate in the chain is being pinned and how validation should be performed.Certificate Usage	Trust anchor assertion / DANE-TA (2)
Determines if the association is made with a certificate or with a public key (via its SPKI structure).Selector	SPKI structure (1)
Determines how matching is done; directly or via a hash. Matching Type	SHA2-256 (1)
Contains the data necessary to perform the matching. Data	8d02536c887482bc34ff54e41d2ba659bf85b341a0a20afadb5813dcfbcf286d Root certificate: RSA 2048 bits Subject: CN=R3, O=Let's Encrypt, C=US Issuer: CN=DST Root CA X3, O=Digital Signature Trust Co. R3 (RSA 2048 bits)

Analysis

Valid DANE configuration

Excellent. Your DANE configuration matches the certificate chain(s) provided by the service. Your TLS configuration enjoys the additional benefit of DANE validation.

SPF

Sender Policy Framework (SPF) is a protocol that allows domain name owners to control which internet hosts are allowed to send email on their behalf. This simple mechanism can be used to reduce the effect of email spoofing and cut down on spam.

Test passed

Everything seems to be well configured. Well done.

SPF Policy Information Main policy

Host where this policy is located.Location	simplelogin.io
SPF version used by this policy.v	spf1
Evaluates SPF policy specified in another DNS location. This directive is typically used to allow hosts controlled by another organization. include	simplelogin.co
This policy element always matches. It's normally used at the end of a policy to specify the handling of hosts that don't match earlier mechanisms. ~all

Analysis

SPF policy found

Policy text: v=spf1 include:simplelogin.co ~all

Location: simplelogin.io

SPF policy is valid

Good. Your SPF policy is valid.

Policy DNS lookups under limit

Good. Your policy stays under the limit of up to 10 DNS queries. The SPF specification Section 4.6.4. requires implementations to limit the total number of DNS queries. Policies that exceed the limit should not be used and may not work in practice.

Lookups: 2

SPF Policy Information Included policy

Host where this policy is located.Location	simplelogin.co
SPF version used by this policy.v	spf1
This mechanism matches if the sending IP address is one of the MX hosts for the domain name. mx
This policy element always matches. It's normally used at the end of a policy to specify the handling of hosts that don't match earlier mechanisms. ~all

DMARC

Domain-based Message Authentication, Reporting, and Conformance (DMARC) is a scalable mechanism by which a mail-originating organization can express domain-level policies and preferences for message validation, disposition, and reporting, that a mail-receiving organization can use to improve mail handling.

Test passed

Everything seems to be well configured. Well done.

DMARC Policy Information

The location from which we obtained this policy.Policy location	_dmarc.simplelogin.io
DMARC version used by this policy.v	DMARC1
Indicates the policy to be enacted by the receiver at the request of the domain owner. Possible values are: none, quarantine, and reject.p	reject
Requested mail receiver policy for all subdomains. Same format as for the p tag.sp	none
Configures failure reporting.fo	1
Addresses to which aggregate feedback is to be sent.rua	mailto:dmarc-rua@simplelogin.co
Addresses to which message-specific failure information is to be reported.ruf	mailto:dmarc-ruf@simplelogin.co
Indicates whether strict or relaxed DKIM alignment mode is required.adkim	r
Indicates whether strict or relaxed SPF alignment mode is required.aspf	r

Analysis

DMARC policy found

Policy: v=DMARC1; p=reject; sp=none; fo=1; rua=mailto:dmarc-rua@simplelogin.co;ruf=mailto:dmarc-ruf@simplelogin.co; adkim=r; aspf=r

Host: _dmarc.simplelogin.io

Valid external destination

Permission record location: simplelogin.io._report._dmarc.simplelogin.co

External destination: mailto:dmarc-rua@simplelogin.co

Permission record contents: v=DMARC1

Valid external destination

Permission record location: simplelogin.io._report._dmarc.simplelogin.co

External destination: mailto:dmarc-ruf@simplelogin.co

Permission record contents: v=DMARC1

Policy is valid

Good. You have a valid DMARC policy.

MTA Strict Transport Security

SMTP Mail Transfer Agent Strict Transport Security (MTA-STS) is a mechanism enabling mail service providers to declare their ability to receive Transport Layer Security (TLS) secure SMTP connections, and to specify whether sending SMTP servers should refuse to deliver to MX hosts that do not offer TLS with a trusted server certificate.

Test passed

Everything seems to be well configured. Well done.

MTA-STS Policy Indicator

Location from which we retrieved the policy indicator.Location	_mta-sts.simplelogin.io
MTA-STS standard version used by this policy indicator.Version	STSv1
Unique policy identifier, whose value must change every time the underlying policy changes.ID	20200325

Analysis

MTA-STS policy indicator valid

Good. Your MTA-STS policy indicator is valid.

MTA-STS Policy

The URL from which the policy was obtained.Location	https://mta-sts.simplelogin.io/.well-known/mta-sts.txt
Policy standard version.version	STSv1
Policy duration, which specifies how long the sending MTAs should remember and enforce the server policy for.max‑age	86,400 seconds (about 1 day)
Policy mode, which can be one of 'none', 'testing' and 'enforcing'. Guess which is best! :)mode	testing
One 'mx' directive specifies one email server pattern that's allowed for this host.mx	mx1.simplelogin.co
One 'mx' directive specifies one email server pattern that's allowed for this host.mx	mx2.simplelogin.co

Analysis

MTA-STS policy is valid

Good. Your MTA-STS policy is valid.

Policy host certificate is valid

Good. Your MTA-STS policy is delivered via a web server that has a valid publicly trusted certificate. This is a necessary condition for the policy to be recognized.

Policy HTTPS response information

Status code: 200

Length: 90 bytes

Content-Type: text/plain

Certificate: mta-sts.simplelogin.io

Leaf certificate

*.simplelogin.io
Issuer: Let's Encrypt
Not Before: 28 Jan 2021 17:14:31 UTC
Not After: 28 Apr 2021 17:14:31 UTC (expires in 22 days 5 hours)
Key: RSA 2048 bits
Signature: SHA256withRSA
View details

Names	.simplelogin.co .simplelogin.fr .simplelogin.io .slmail.me simplelogin.co simplelogin.fr simplelogin.io slmail.me
Subject DN	CN=*.simplelogin.io
Subject Key Identifier	e49571c9d20f173aba9553126c4743f575462b7e
Serial	4d7a9c7d78c48803dfb4200ea861adbaf51
Not Before	28 Jan 2021 17:14:31 UTC
Not After	28 Apr 2021 17:14:31 UTC
Validity period	91 days
Key Usage	digitalSignature, keyEncipherment
Extended Key Usage	serverAuth, clientAuth
Must Staple	No
Issuer
Issuer DN	CN=R3, O=Let's Encrypt, C=US
Certification Authority	Let's Encrypt
Validation Type	Domain Validation (DV)
Authority Key Identifier	keyid:142eb317b75856cbae500940e61faf9d8b14c2c6
Parent Certificate	http://r3.i.lencr.org/
OCSP	http://r3.o.lencr.org
Certificate Transparency
Signed Certificate Timestamps	28 Jan 2021 18:14:32 UTC \| DigiCert Yeti2021 Log \| Non-Google (Qualified) 28 Jan 2021 18:14:32 UTC \| Google 'Xenon2021' log \| Google (Qualified)
Required SCTs	2
Fingerprints
SHA1	9e90865347773009dddbac1a8c1d54557b53a639
SHA256	d9d976b088994c0ce7ee29a76eb65ba827488f8fafb9ef0cb73322e35c5c7cea
SPKI SHA256	61e49afb66b86f96c48485ac86140b038b4f18a7239d9f8cb334fd921b71adb6

Analysis

Strong private key

Good. The private key associated with this certificate is secure.

Strong signature algorithm

Good. This certificate uses a strong signature algorithm.

Certificate matches hostname

Good. The provided certificate matches the expected hostnames.

Certificate dates match

Good. The certificate is valid for use at this point of time.

Certificate expires within four weeks

This certificate will expire within four weeks. Plan to replace it before it does.

Certificate has not been revoked

Good. This certificate has not been revoked.

Certificate satisfies Chrome's CT requirements

This certificate contains embedded CT signatures and satisfies Chrome's CT requirements at this time.

Certificate Chain

Leaf certificate

*.simplelogin.io | d9d976b
Not After: 28 Apr 2021 17:14:31 UTC (expires in 22 days 5 hours)
Authentication: RSA 2048 bits (SHA256withRSA)
View details

Names	.simplelogin.co .simplelogin.fr .simplelogin.io .slmail.me simplelogin.co simplelogin.fr simplelogin.io slmail.me
Subject DN	CN=*.simplelogin.io
Subject Key Identifier	e49571c9d20f173aba9553126c4743f575462b7e
Serial	4d7a9c7d78c48803dfb4200ea861adbaf51
Not Before	28 Jan 2021 17:14:31 UTC
Not After	28 Apr 2021 17:14:31 UTC
Validity period	91 days
Key Usage	digitalSignature, keyEncipherment
Extended Key Usage	serverAuth, clientAuth
Must Staple	No
Issuer
Issuer DN	CN=R3, O=Let's Encrypt, C=US
Certification Authority	Let's Encrypt
Validation Type	Domain Validation (DV)
Authority Key Identifier	keyid:142eb317b75856cbae500940e61faf9d8b14c2c6
Parent Certificate	http://r3.i.lencr.org/
OCSP	http://r3.o.lencr.org
Certificate Transparency
Signed Certificate Timestamps	28 Jan 2021 18:14:32 UTC \| DigiCert Yeti2021 Log \| Non-Google (Qualified) 28 Jan 2021 18:14:32 UTC \| Google 'Xenon2021' log \| Google (Qualified)
Required SCTs	2
Fingerprints
SHA1	9e90865347773009dddbac1a8c1d54557b53a639
SHA256	d9d976b088994c0ce7ee29a76eb65ba827488f8fafb9ef0cb73322e35c5c7cea
SPKI SHA256	61e49afb66b86f96c48485ac86140b038b4f18a7239d9f8cb334fd921b71adb6

Intermediate certificate

R3 | 730c1bd
Not After: 29 Sep 2021 19:21:40 UTC (expires in 5 months 23 days)
Authentication: RSA 2048 bits (SHA256withRSA)
View details

Subject DN	CN=R3, O=Let's Encrypt, C=US
Subject Key Identifier	142eb317b75856cbae500940e61faf9d8b14c2c6
Serial	400175048314a4c8218c84a90c16cddf
Not Before	07 Oct 2020 19:21:40 UTC
Not After	29 Sep 2021 19:21:40 UTC
Validity period	358 days
Key Usage	digitalSignature, keyCertSign, cRLSign
Extended Key Usage	serverAuth, clientAuth
Issuer
Issuer DN	CN=DST Root CA X3, O=Digital Signature Trust Co.
Certification Authority	IdenTrust Services, LLC
Validation Type	Not Applicable
Authority Key Identifier	keyid:c4a7b1a47b2c71fadbe14b9075ffc41560858910
Parent Certificate	http://apps.identrust.com/roots/dstrootcax3.p7c
CRL	http://crl.identrust.com/DSTROOTCAX3CRL.crl
CA certificate	Yes (pathlen 0)
Fingerprints
SHA1	48504e974c0dac5b5cd476c8202274b24c8c7172
SHA256	730c1bdcd85f57ce5dc0bba733e5f1ba5a925b2a771d640a26f7a454224dad3b
SPKI SHA256	8d02536c887482bc34ff54e41d2ba659bf85b341a0a20afadb5813dcfbcf286d

Root certificate

DST Root CA X3 | 0687260
Not After: 30 Sep 2021 14:01:15 UTC (expires in 5 months 24 days)
Authentication: RSA 2048 bits (SHA1withRSA)
View details

Subject DN	CN=DST Root CA X3, O=Digital Signature Trust Co.
Subject Key Identifier	c4a7b1a47b2c71fadbe14b9075ffc41560858910
Serial	44afb080d6a327ba893039862ef8406b
Not Before	30 Sep 2000 21:12:19 UTC
Not After	30 Sep 2021 14:01:15 UTC
Key Usage	keyCertSign, cRLSign
Issuer
Issuer DN	CN=DST Root CA X3, O=Digital Signature Trust Co.
Certification Authority	IdenTrust Services, LLC
Validation Type	Self-signed
CA certificate	Yes (pathlen unlimited)
Fingerprints
SHA1	dac9024f54d8f6df94935fb1732638ca6ad77c13
SHA256	0687260331a72403d909f105e69bcf0d32e1bd2493ffc6d9206d11bcd6770739
SPKI SHA256	563b3caf8cfef34c2335caf560a7a95906e8488462eb75ac59784830df9e5b2b

Analysis

Certificate chain is correct

Good. This chain contains all the right certificates and in the right order.

SMTP TLS Reporting

SMTP TLS Reporting (RFC 8460), or TLS-RPT for short, describes a reporting mechanism and format by which systems sending email can share statistics and specific information about potential failures with recipient domains. Recipient domains can then use this information to both detect potential attacks and diagnose unintentional misconfigurations. TLS-RPT can be used with DANE or MTA-STS.

Test passed

Everything seems to be well configured. Well done.

TLS-RPT Policy

Location from which we retrieved the policy indicator.Location	_smtp._tls.simplelogin.io
TLS-RPT standard version used by this policy indicator.Version	TLSRPTv1
Reporting endpoints specified in the policy.Reporting Endpoints	mailto:tlsrpt@simplelogin.io

Analysis

SMTP TLS-RPT policy valid

Good. Your TLS-RPT policy is valid. SMTP TLS Reporting is a young standard that is not yet widely supported, but support is probably going to increase over time.

HTTP (80)

To observe your HTTP implementation, we submit a request to the homepage of your site on port 80, follow all redirections (even when they take us to other domain names), and record the returned HTTP headers.

Test passed

Everything seems to be well configured. Well done.

URL: http://simplelogin.io/

1

http://simplelogin.io/

HTTP/1.1 301 Moved Permanently

Server	nginx/1.18.0 (Ubuntu)
Date	Tue, 06 Apr 2021 12:05:28 GMT
Content-Type	text/html
Content-Length	178
Connection	keep-alive
Location	https://simplelogin.io/
X-SL-Protocol	http

2

https://simplelogin.io/

HTTP/1.1 200 OK

Server	nginx/1.18.0 (Ubuntu)
Date	Tue, 06 Apr 2021 12:05:29 GMT
Content-Type	text/html
Last-Modified	Thu, 01 Apr 2021 17:01:06 GMT
Transfer-Encoding	chunked
Connection	keep-alive
Vary	Accept-Encoding
ETag	W/"6065fc52-116be"
Expires	Thu, 01 Jan 1970 00:00:01 GMT
Cache-Control	no-cache
Strict-Transport-Security	max-age=63072000; includeSubDomains; preload
Expect-CT	enforce, max-age=604800, report-uri="https://simplelogin.report-uri.com/r/d/ct/enforce"
X-Frame-Options	SAMEORIGIN
X-Content-Type-Options	nosniff
X-XSS-Protection	1; mode=block
Content-Security-Policy	script-src 'self' 'unsafe-inline' 'unsafe-eval' https://cdn.paddle.com/paddle/paddle.js https://gc.zgo.at/count.js https://hcaptcha.com https://.hcaptcha.com https://plausible.simplelogin.io/js/index.js; child-src 'self' https://hcaptcha.com https://.hcaptcha.com https://.paddle.com https://www.youtube.com; style-src 'self' 'unsafe-inline' https://hcaptcha.com https://.hcaptcha.com https://cdn.paddle.com

Analysis

HTTP server redirects to HTTPS

Good. This plaintext HTTP server redirects to HTTPS.

URL: http://www.simplelogin.io/

1

http://www.simplelogin.io/

HTTP/1.1 301 Moved Permanently

Server	nginx/1.18.0 (Ubuntu)
Date	Tue, 06 Apr 2021 12:05:29 GMT
Content-Type	text/html
Content-Length	178
Connection	keep-alive
Location	https://www.simplelogin.io/
X-SL-Protocol	http

2

https://www.simplelogin.io/

HTTP/1.1 301 Moved Permanently

Server	nginx/1.18.0 (Ubuntu)
Date	Tue, 06 Apr 2021 12:05:29 GMT
Content-Type	text/html
Content-Length	178
Connection	keep-alive
Location	https://simplelogin.io/
Strict-Transport-Security	max-age=63072000; includeSubDomains; preload
Expect-CT	enforce, max-age=604800, report-uri="https://simplelogin.report-uri.com/r/d/ct/enforce"
X-Frame-Options	SAMEORIGIN
X-Content-Type-Options	nosniff
X-XSS-Protection	1; mode=block
Content-Security-Policy	script-src 'self' 'unsafe-inline' 'unsafe-eval' https://cdn.paddle.com/paddle/paddle.js https://gc.zgo.at/count.js https://hcaptcha.com https://.hcaptcha.com https://plausible.simplelogin.io/js/index.js; child-src 'self' https://hcaptcha.com https://.hcaptcha.com https://.paddle.com https://www.youtube.com; style-src 'self' 'unsafe-inline' https://hcaptcha.com https://.hcaptcha.com https://cdn.paddle.com

3

https://simplelogin.io/

HTTP/1.1 200 OK

Server	nginx/1.18.0 (Ubuntu)
Date	Tue, 06 Apr 2021 12:05:30 GMT
Content-Type	text/html
Last-Modified	Thu, 01 Apr 2021 17:01:06 GMT
Transfer-Encoding	chunked
Connection	keep-alive
Vary	Accept-Encoding
ETag	W/"6065fc52-116be"
Expires	Thu, 01 Jan 1970 00:00:01 GMT
Cache-Control	no-cache
Strict-Transport-Security	max-age=63072000; includeSubDomains; preload
Expect-CT	enforce, max-age=604800, report-uri="https://simplelogin.report-uri.com/r/d/ct/enforce"
X-Frame-Options	SAMEORIGIN
X-Content-Type-Options	nosniff
X-XSS-Protection	1; mode=block
Content-Security-Policy	script-src 'self' 'unsafe-inline' 'unsafe-eval' https://cdn.paddle.com/paddle/paddle.js https://gc.zgo.at/count.js https://hcaptcha.com https://.hcaptcha.com https://plausible.simplelogin.io/js/index.js; child-src 'self' https://hcaptcha.com https://.hcaptcha.com https://.paddle.com https://www.youtube.com; style-src 'self' 'unsafe-inline' https://hcaptcha.com https://.hcaptcha.com https://cdn.paddle.com

Analysis

HTTP server redirects to HTTPS

Good. This plaintext HTTP server redirects to HTTPS.

HTTP (443)

To observe your HTTPS implementation, we submit a request to the homepage of your site on port 443, follow all redirections (even when they take us to other domain names), and record the returned HTTP headers. We use the most recent set of headers returned from the tested hostname for further tests such as HSTS and HPKP.

Test passed

Everything seems to be well configured. Well done.

URL: https://simplelogin.io/

1

https://simplelogin.io/

HTTP/1.1 200 OK

Server	nginx/1.18.0 (Ubuntu)
Date	Tue, 06 Apr 2021 12:05:30 GMT
Content-Type	text/html
Last-Modified	Thu, 01 Apr 2021 17:01:06 GMT
Transfer-Encoding	chunked
Connection	keep-alive
Vary	Accept-Encoding
ETag	W/"6065fc52-116be"
Expires	Thu, 01 Jan 1970 00:00:01 GMT
Cache-Control	no-cache
Strict-Transport-Security	max-age=63072000; includeSubDomains; preload
Expect-CT	enforce, max-age=604800, report-uri="https://simplelogin.report-uri.com/r/d/ct/enforce"
X-Frame-Options	SAMEORIGIN
X-Content-Type-Options	nosniff
X-XSS-Protection	1; mode=block
Content-Security-Policy	script-src 'self' 'unsafe-inline' 'unsafe-eval' https://cdn.paddle.com/paddle/paddle.js https://gc.zgo.at/count.js https://hcaptcha.com https://.hcaptcha.com https://plausible.simplelogin.io/js/index.js; child-src 'self' https://hcaptcha.com https://.hcaptcha.com https://.paddle.com https://www.youtube.com; style-src 'self' 'unsafe-inline' https://hcaptcha.com https://.hcaptcha.com https://cdn.paddle.com

URL: https://www.simplelogin.io/

1

https://www.simplelogin.io/

HTTP/1.1 301 Moved Permanently

Server	nginx/1.18.0 (Ubuntu)
Date	Tue, 06 Apr 2021 12:05:31 GMT
Content-Type	text/html
Content-Length	178
Connection	keep-alive
Location	https://simplelogin.io/
Strict-Transport-Security	max-age=63072000; includeSubDomains; preload
Expect-CT	enforce, max-age=604800, report-uri="https://simplelogin.report-uri.com/r/d/ct/enforce"
X-Frame-Options	SAMEORIGIN
X-Content-Type-Options	nosniff
X-XSS-Protection	1; mode=block
Content-Security-Policy	script-src 'self' 'unsafe-inline' 'unsafe-eval' https://cdn.paddle.com/paddle/paddle.js https://gc.zgo.at/count.js https://hcaptcha.com https://.hcaptcha.com https://plausible.simplelogin.io/js/index.js; child-src 'self' https://hcaptcha.com https://.hcaptcha.com https://.paddle.com https://www.youtube.com; style-src 'self' 'unsafe-inline' https://hcaptcha.com https://.hcaptcha.com https://cdn.paddle.com

2

https://simplelogin.io/

HTTP/1.1 200 OK

Server	nginx/1.18.0 (Ubuntu)
Date	Tue, 06 Apr 2021 12:05:31 GMT
Content-Type	text/html
Last-Modified	Thu, 01 Apr 2021 17:01:06 GMT
Transfer-Encoding	chunked
Connection	keep-alive
Vary	Accept-Encoding
ETag	W/"6065fc52-116be"
Expires	Thu, 01 Jan 1970 00:00:01 GMT
Cache-Control	no-cache
Strict-Transport-Security	max-age=63072000; includeSubDomains; preload
Expect-CT	enforce, max-age=604800, report-uri="https://simplelogin.report-uri.com/r/d/ct/enforce"
X-Frame-Options	SAMEORIGIN
X-Content-Type-Options	nosniff
X-XSS-Protection	1; mode=block
Content-Security-Policy	script-src 'self' 'unsafe-inline' 'unsafe-eval' https://cdn.paddle.com/paddle/paddle.js https://gc.zgo.at/count.js https://hcaptcha.com https://.hcaptcha.com https://plausible.simplelogin.io/js/index.js; child-src 'self' https://hcaptcha.com https://.hcaptcha.com https://.paddle.com https://www.youtube.com; style-src 'self' 'unsafe-inline' https://hcaptcha.com https://.hcaptcha.com https://cdn.paddle.com

WWW TLS

Transport Layer Security (TLS) is the most widely used encryption protocol on the Internet. In combination with valid certificates, servers can establish trusted communication channels even with users who have never visited them before. Network attackers can't uncover what is being communicated, even when they can see all the traffic.

Test passed

Everything seems to be well configured. Well done.

TLS Configuration: www.simplelogin.io (2a04:3544:1000:1510:8c7a:9cff:fe3c:4b2c)

Encryption protocol version determines what features are available for negotiation between client and server.Supported protocols	TLS v1.3 TLS v1.2
Servers should always enforce their own cipher suite preference, as that is the only approach that guarantees that the best possible suite is selected.Server suite preference
Shows cipher suite configuration for this protocol version.TLS v1.3 Unknown preference	Suite: TLS_CHACHA20_POLY1305_SHA256 Suite ID: 0x1303 Cipher name: CHACHA20 Cipher strength: 256 bits Cipher mode: AEAD Key exchange: ecdh_x25519 Key exchange strength: EC ecdh_x25519 (256 bits) Forward secrecy: Yes PRF: SHA256 TLS_CHACHA20_POLY1305_SHA256 256 bits (ECDHE 256 bits) Suite: TLS_AES_128_GCM_SHA256 Suite ID: 0x1301 Cipher name: AES Cipher strength: 128 bits Cipher block size: 128 bits Cipher mode: AEAD Key exchange: ecdh_x25519 Key exchange strength: EC ecdh_x25519 (256 bits) Forward secrecy: Yes PRF: SHA256 TLS_AES_128_GCM_SHA256 128 bits (ECDHE 256 bits) Suite: TLS_AES_256_GCM_SHA384 Suite ID: 0x1302 Cipher name: AES Cipher strength: 256 bits Cipher block size: 128 bits Cipher mode: AEAD Key exchange: ecdh_x25519 Key exchange strength: EC ecdh_x25519 (256 bits) Forward secrecy: Yes PRF: SHA384 TLS_AES_256_GCM_SHA384 256 bits (ECDHE 256 bits)
Shows cipher suite configuration for this protocol version.TLS v1.2 Unknown preference	Suite: TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256 Suite ID: 0xcca8 Cipher name: CHACHA20 Cipher strength: 256 bits Cipher mode: AEAD Key exchange: ECDHE_RSA Key exchange strength: EC ecdh_x25519 (256 bits) Forward secrecy: Yes PRF: SHA256 TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256 256 bits (ECDHE 256 bits) Suite: TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256 Suite ID: 0xc02f Cipher name: AES Cipher strength: 128 bits Cipher block size: 128 bits Cipher mode: AEAD Key exchange: ECDHE_RSA Key exchange strength: EC ecdh_x25519 (256 bits) Forward secrecy: Yes PRF: SHA256 TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256 128 bits (ECDHE 256 bits) Suite: TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 Suite ID: 0xc030 Cipher name: AES Cipher strength: 256 bits Cipher block size: 128 bits Cipher mode: AEAD Key exchange: ECDHE_RSA Key exchange strength: EC ecdh_x25519 (256 bits) Forward secrecy: Yes PRF: SHA384 TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 256 bits (ECDHE 256 bits) Suite: TLS_DHE_RSA_WITH_AES_128_GCM_SHA256 Suite ID: 0x9e Cipher name: AES Cipher strength: 128 bits Cipher block size: 128 bits Cipher mode: AEAD Key exchange: DHE_RSA Key exchange strength: 2048 bits Forward secrecy: Yes PRF: SHA256 TLS_DHE_RSA_WITH_AES_128_GCM_SHA256 128 bits (DHE 2048 bits) Suite: TLS_DHE_RSA_WITH_AES_256_GCM_SHA384 Suite ID: 0x9f Cipher name: AES Cipher strength: 256 bits Cipher block size: 128 bits Cipher mode: AEAD Key exchange: DHE_RSA Key exchange strength: 2048 bits Forward secrecy: Yes PRF: SHA384 TLS_DHE_RSA_WITH_AES_256_GCM_SHA384 256 bits (DHE 2048 bits)

Analysis

TLS 1.3 supported

Excellent. This server supports TLS 1.3, which is the latest revision of the TLS protocol and a significant improvement over earlier versions. Developed over a period of several years and extensively analyzed prior to the release, TLS 1.3 removed insecure features, and improved both security and performance.

TLS 1.2 supported

Good. This server supports TLS 1.2, which can provide strong security when configured correctly. This version of the TLS protocol is necessary to provide good security with a wide range of clients that don't yet support TLS 1.3.

Deprecated protocols not supported

Excellent. This server doesn't support any of the deprecated protocol (TLS 1.1 and earlier).

Strong key exchange detected

Excellent. All cipher suites on this server rely on strong key exchange. The sweet spot is 2048 bits for DHE and 256 bits for ECDHE. Putting ECDHE suites first guarantees best security and best performance.

Only strong suites supported

Excellent. This server supports only strong cipher suites, which use strong authenticated encryption and provide forward secrecy.

All TLS connections satisfy Chrome's CT requirements

All TLS connections established with this server satisfy Chrome's CT requirements, using certificate, TLS extension, or OCSP response as SCT transport method.

SCT transport: CERT

DHE server parameter not reused

This server does not reuse the private value used for the Diffie-Hellman key exchange.

TLS Configuration: www.simplelogin.io (94.237.111.15)

Encryption protocol version determines what features are available for negotiation between client and server.Supported protocols	TLS v1.3 TLS v1.2
Servers should always enforce their own cipher suite preference, as that is the only approach that guarantees that the best possible suite is selected.Server suite preference
Shows cipher suite configuration for this protocol version.TLS v1.3 Unknown preference	Suite: TLS_CHACHA20_POLY1305_SHA256 Suite ID: 0x1303 Cipher name: CHACHA20 Cipher strength: 256 bits Cipher mode: AEAD Key exchange: ecdh_x25519 Key exchange strength: EC ecdh_x25519 (256 bits) Forward secrecy: Yes PRF: SHA256 TLS_CHACHA20_POLY1305_SHA256 256 bits (ECDHE 256 bits) Suite: TLS_AES_128_GCM_SHA256 Suite ID: 0x1301 Cipher name: AES Cipher strength: 128 bits Cipher block size: 128 bits Cipher mode: AEAD Key exchange: ecdh_x25519 Key exchange strength: EC ecdh_x25519 (256 bits) Forward secrecy: Yes PRF: SHA256 TLS_AES_128_GCM_SHA256 128 bits (ECDHE 256 bits) Suite: TLS_AES_256_GCM_SHA384 Suite ID: 0x1302 Cipher name: AES Cipher strength: 256 bits Cipher block size: 128 bits Cipher mode: AEAD Key exchange: ecdh_x25519 Key exchange strength: EC ecdh_x25519 (256 bits) Forward secrecy: Yes PRF: SHA384 TLS_AES_256_GCM_SHA384 256 bits (ECDHE 256 bits)
Shows cipher suite configuration for this protocol version.TLS v1.2 Unknown preference	Suite: TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256 Suite ID: 0xcca8 Cipher name: CHACHA20 Cipher strength: 256 bits Cipher mode: AEAD Key exchange: ECDHE_RSA Key exchange strength: EC ecdh_x25519 (256 bits) Forward secrecy: Yes PRF: SHA256 TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256 256 bits (ECDHE 256 bits) Suite: TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256 Suite ID: 0xc02f Cipher name: AES Cipher strength: 128 bits Cipher block size: 128 bits Cipher mode: AEAD Key exchange: ECDHE_RSA Key exchange strength: EC ecdh_x25519 (256 bits) Forward secrecy: Yes PRF: SHA256 TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256 128 bits (ECDHE 256 bits) Suite: TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 Suite ID: 0xc030 Cipher name: AES Cipher strength: 256 bits Cipher block size: 128 bits Cipher mode: AEAD Key exchange: ECDHE_RSA Key exchange strength: EC ecdh_x25519 (256 bits) Forward secrecy: Yes PRF: SHA384 TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 256 bits (ECDHE 256 bits) Suite: TLS_DHE_RSA_WITH_AES_128_GCM_SHA256 Suite ID: 0x9e Cipher name: AES Cipher strength: 128 bits Cipher block size: 128 bits Cipher mode: AEAD Key exchange: DHE_RSA Key exchange strength: 2048 bits Forward secrecy: Yes PRF: SHA256 TLS_DHE_RSA_WITH_AES_128_GCM_SHA256 128 bits (DHE 2048 bits) Suite: TLS_DHE_RSA_WITH_AES_256_GCM_SHA384 Suite ID: 0x9f Cipher name: AES Cipher strength: 256 bits Cipher block size: 128 bits Cipher mode: AEAD Key exchange: DHE_RSA Key exchange strength: 2048 bits Forward secrecy: Yes PRF: SHA384 TLS_DHE_RSA_WITH_AES_256_GCM_SHA384 256 bits (DHE 2048 bits)

Analysis

TLS 1.3 supported

Excellent. This server supports TLS 1.3, which is the latest revision of the TLS protocol and a significant improvement over earlier versions. Developed over a period of several years and extensively analyzed prior to the release, TLS 1.3 removed insecure features, and improved both security and performance.

TLS 1.2 supported

Good. This server supports TLS 1.2, which can provide strong security when configured correctly. This version of the TLS protocol is necessary to provide good security with a wide range of clients that don't yet support TLS 1.3.

Deprecated protocols not supported

Excellent. This server doesn't support any of the deprecated protocol (TLS 1.1 and earlier).

Strong key exchange detected

Excellent. All cipher suites on this server rely on strong key exchange. The sweet spot is 2048 bits for DHE and 256 bits for ECDHE. Putting ECDHE suites first guarantees best security and best performance.

Only strong suites supported

Excellent. This server supports only strong cipher suites, which use strong authenticated encryption and provide forward secrecy.

All TLS connections satisfy Chrome's CT requirements

All TLS connections established with this server satisfy Chrome's CT requirements, using certificate, TLS extension, or OCSP response as SCT transport method.

SCT transport: CERT

DHE server parameter not reused

This server does not reuse the private value used for the Diffie-Hellman key exchange.

TLS Configuration: simplelogin.io (2a04:3544:1000:1510:8c7a:9cff:fe3c:4b2c)

Encryption protocol version determines what features are available for negotiation between client and server.Supported protocols	TLS v1.3 TLS v1.2
Servers should always enforce their own cipher suite preference, as that is the only approach that guarantees that the best possible suite is selected.Server suite preference
Shows cipher suite configuration for this protocol version.TLS v1.3 Unknown preference	Suite: TLS_CHACHA20_POLY1305_SHA256 Suite ID: 0x1303 Cipher name: CHACHA20 Cipher strength: 256 bits Cipher mode: AEAD Key exchange: ecdh_x25519 Key exchange strength: EC ecdh_x25519 (256 bits) Forward secrecy: Yes PRF: SHA256 TLS_CHACHA20_POLY1305_SHA256 256 bits (ECDHE 256 bits) Suite: TLS_AES_128_GCM_SHA256 Suite ID: 0x1301 Cipher name: AES Cipher strength: 128 bits Cipher block size: 128 bits Cipher mode: AEAD Key exchange: ecdh_x25519 Key exchange strength: EC ecdh_x25519 (256 bits) Forward secrecy: Yes PRF: SHA256 TLS_AES_128_GCM_SHA256 128 bits (ECDHE 256 bits) Suite: TLS_AES_256_GCM_SHA384 Suite ID: 0x1302 Cipher name: AES Cipher strength: 256 bits Cipher block size: 128 bits Cipher mode: AEAD Key exchange: ecdh_x25519 Key exchange strength: EC ecdh_x25519 (256 bits) Forward secrecy: Yes PRF: SHA384 TLS_AES_256_GCM_SHA384 256 bits (ECDHE 256 bits)
Shows cipher suite configuration for this protocol version.TLS v1.2 Unknown preference	Suite: TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256 Suite ID: 0xcca8 Cipher name: CHACHA20 Cipher strength: 256 bits Cipher mode: AEAD Key exchange: ECDHE_RSA Key exchange strength: EC ecdh_x25519 (256 bits) Forward secrecy: Yes PRF: SHA256 TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256 256 bits (ECDHE 256 bits) Suite: TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256 Suite ID: 0xc02f Cipher name: AES Cipher strength: 128 bits Cipher block size: 128 bits Cipher mode: AEAD Key exchange: ECDHE_RSA Key exchange strength: EC ecdh_x25519 (256 bits) Forward secrecy: Yes PRF: SHA256 TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256 128 bits (ECDHE 256 bits) Suite: TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 Suite ID: 0xc030 Cipher name: AES Cipher strength: 256 bits Cipher block size: 128 bits Cipher mode: AEAD Key exchange: ECDHE_RSA Key exchange strength: EC ecdh_x25519 (256 bits) Forward secrecy: Yes PRF: SHA384 TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 256 bits (ECDHE 256 bits) Suite: TLS_DHE_RSA_WITH_AES_128_GCM_SHA256 Suite ID: 0x9e Cipher name: AES Cipher strength: 128 bits Cipher block size: 128 bits Cipher mode: AEAD Key exchange: DHE_RSA Key exchange strength: 2048 bits Forward secrecy: Yes PRF: SHA256 TLS_DHE_RSA_WITH_AES_128_GCM_SHA256 128 bits (DHE 2048 bits) Suite: TLS_DHE_RSA_WITH_AES_256_GCM_SHA384 Suite ID: 0x9f Cipher name: AES Cipher strength: 256 bits Cipher block size: 128 bits Cipher mode: AEAD Key exchange: DHE_RSA Key exchange strength: 2048 bits Forward secrecy: Yes PRF: SHA384 TLS_DHE_RSA_WITH_AES_256_GCM_SHA384 256 bits (DHE 2048 bits)

Analysis

TLS 1.3 supported

Excellent. This server supports TLS 1.3, which is the latest revision of the TLS protocol and a significant improvement over earlier versions. Developed over a period of several years and extensively analyzed prior to the release, TLS 1.3 removed insecure features, and improved both security and performance.

TLS 1.2 supported

Good. This server supports TLS 1.2, which can provide strong security when configured correctly. This version of the TLS protocol is necessary to provide good security with a wide range of clients that don't yet support TLS 1.3.

Deprecated protocols not supported

Excellent. This server doesn't support any of the deprecated protocol (TLS 1.1 and earlier).

Strong key exchange detected

Excellent. All cipher suites on this server rely on strong key exchange. The sweet spot is 2048 bits for DHE and 256 bits for ECDHE. Putting ECDHE suites first guarantees best security and best performance.

Only strong suites supported

Excellent. This server supports only strong cipher suites, which use strong authenticated encryption and provide forward secrecy.

All TLS connections satisfy Chrome's CT requirements

All TLS connections established with this server satisfy Chrome's CT requirements, using certificate, TLS extension, or OCSP response as SCT transport method.

SCT transport: CERT

DHE server parameter not reused

This server does not reuse the private value used for the Diffie-Hellman key exchange.

TLS Configuration: simplelogin.io (94.237.111.15)

Encryption protocol version determines what features are available for negotiation between client and server.Supported protocols	TLS v1.3 TLS v1.2
Servers should always enforce their own cipher suite preference, as that is the only approach that guarantees that the best possible suite is selected.Server suite preference
Shows cipher suite configuration for this protocol version.TLS v1.3 Unknown preference	Suite: TLS_CHACHA20_POLY1305_SHA256 Suite ID: 0x1303 Cipher name: CHACHA20 Cipher strength: 256 bits Cipher mode: AEAD Key exchange: ecdh_x25519 Key exchange strength: EC ecdh_x25519 (256 bits) Forward secrecy: Yes PRF: SHA256 TLS_CHACHA20_POLY1305_SHA256 256 bits (ECDHE 256 bits) Suite: TLS_AES_128_GCM_SHA256 Suite ID: 0x1301 Cipher name: AES Cipher strength: 128 bits Cipher block size: 128 bits Cipher mode: AEAD Key exchange: ecdh_x25519 Key exchange strength: EC ecdh_x25519 (256 bits) Forward secrecy: Yes PRF: SHA256 TLS_AES_128_GCM_SHA256 128 bits (ECDHE 256 bits) Suite: TLS_AES_256_GCM_SHA384 Suite ID: 0x1302 Cipher name: AES Cipher strength: 256 bits Cipher block size: 128 bits Cipher mode: AEAD Key exchange: ecdh_x25519 Key exchange strength: EC ecdh_x25519 (256 bits) Forward secrecy: Yes PRF: SHA384 TLS_AES_256_GCM_SHA384 256 bits (ECDHE 256 bits)
Shows cipher suite configuration for this protocol version.TLS v1.2 Unknown preference	Suite: TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256 Suite ID: 0xcca8 Cipher name: CHACHA20 Cipher strength: 256 bits Cipher mode: AEAD Key exchange: ECDHE_RSA Key exchange strength: EC ecdh_x25519 (256 bits) Forward secrecy: Yes PRF: SHA256 TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256 256 bits (ECDHE 256 bits) Suite: TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256 Suite ID: 0xc02f Cipher name: AES Cipher strength: 128 bits Cipher block size: 128 bits Cipher mode: AEAD Key exchange: ECDHE_RSA Key exchange strength: EC ecdh_x25519 (256 bits) Forward secrecy: Yes PRF: SHA256 TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256 128 bits (ECDHE 256 bits) Suite: TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 Suite ID: 0xc030 Cipher name: AES Cipher strength: 256 bits Cipher block size: 128 bits Cipher mode: AEAD Key exchange: ECDHE_RSA Key exchange strength: EC ecdh_x25519 (256 bits) Forward secrecy: Yes PRF: SHA384 TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 256 bits (ECDHE 256 bits) Suite: TLS_DHE_RSA_WITH_AES_128_GCM_SHA256 Suite ID: 0x9e Cipher name: AES Cipher strength: 128 bits Cipher block size: 128 bits Cipher mode: AEAD Key exchange: DHE_RSA Key exchange strength: 2048 bits Forward secrecy: Yes PRF: SHA256 TLS_DHE_RSA_WITH_AES_128_GCM_SHA256 128 bits (DHE 2048 bits) Suite: TLS_DHE_RSA_WITH_AES_256_GCM_SHA384 Suite ID: 0x9f Cipher name: AES Cipher strength: 256 bits Cipher block size: 128 bits Cipher mode: AEAD Key exchange: DHE_RSA Key exchange strength: 2048 bits Forward secrecy: Yes PRF: SHA384 TLS_DHE_RSA_WITH_AES_256_GCM_SHA384 256 bits (DHE 2048 bits)

Analysis

TLS 1.3 supported

Excellent. This server supports TLS 1.3, which is the latest revision of the TLS protocol and a significant improvement over earlier versions. Developed over a period of several years and extensively analyzed prior to the release, TLS 1.3 removed insecure features, and improved both security and performance.

TLS 1.2 supported

Good. This server supports TLS 1.2, which can provide strong security when configured correctly. This version of the TLS protocol is necessary to provide good security with a wide range of clients that don't yet support TLS 1.3.

Deprecated protocols not supported

Excellent. This server doesn't support any of the deprecated protocol (TLS 1.1 and earlier).

Strong key exchange detected

Excellent. All cipher suites on this server rely on strong key exchange. The sweet spot is 2048 bits for DHE and 256 bits for ECDHE. Putting ECDHE suites first guarantees best security and best performance.

Only strong suites supported

Excellent. This server supports only strong cipher suites, which use strong authenticated encryption and provide forward secrecy.

All TLS connections satisfy Chrome's CT requirements

All TLS connections established with this server satisfy Chrome's CT requirements, using certificate, TLS extension, or OCSP response as SCT transport method.

SCT transport: CERT

DHE server parameter not reused

This server does not reuse the private value used for the Diffie-Hellman key exchange.

WWW Certificates

A certificate is a digital document that contains a public key, some information about the entity associated with it, and a digital signature from the certificate issuer. It’s a mechanism that enables us to exchange, store, and use public keys. Being able to reliably verify the identity of a remote server is crucial in order to achieve secure encrypted communication.

Test passed

Everything seems to be well configured. Well done.

Certificate: simplelogin.io

Leaf certificate

*.simplelogin.io
Issuer: Let's Encrypt
Not Before: 28 Jan 2021 17:14:31 UTC
Not After: 28 Apr 2021 17:14:31 UTC (expires in 22 days 5 hours)
Key: RSA 2048 bits
Signature: SHA256withRSA
View details

Names	.simplelogin.co .simplelogin.fr .simplelogin.io .slmail.me simplelogin.co simplelogin.fr simplelogin.io slmail.me
Subject DN	CN=*.simplelogin.io
Subject Key Identifier	e49571c9d20f173aba9553126c4743f575462b7e
Serial	4d7a9c7d78c48803dfb4200ea861adbaf51
Not Before	28 Jan 2021 17:14:31 UTC
Not After	28 Apr 2021 17:14:31 UTC
Validity period	91 days
Key Usage	digitalSignature, keyEncipherment
Extended Key Usage	serverAuth, clientAuth
Must Staple	No
Issuer
Issuer DN	CN=R3, O=Let's Encrypt, C=US
Certification Authority	Let's Encrypt
Validation Type	Domain Validation (DV)
Authority Key Identifier	keyid:142eb317b75856cbae500940e61faf9d8b14c2c6
Parent Certificate	http://r3.i.lencr.org/
OCSP	http://r3.o.lencr.org
Certificate Transparency
Signed Certificate Timestamps	28 Jan 2021 18:14:32 UTC \| DigiCert Yeti2021 Log \| Non-Google (Qualified) 28 Jan 2021 18:14:32 UTC \| Google 'Xenon2021' log \| Google (Qualified)
Required SCTs	2
Fingerprints
SHA1	9e90865347773009dddbac1a8c1d54557b53a639
SHA256	d9d976b088994c0ce7ee29a76eb65ba827488f8fafb9ef0cb73322e35c5c7cea
SPKI SHA256	61e49afb66b86f96c48485ac86140b038b4f18a7239d9f8cb334fd921b71adb6

Analysis

Strong private key

Good. The private key associated with this certificate is secure.

Strong signature algorithm

Good. This certificate uses a strong signature algorithm.

Certificate matches hostname

Good. The provided certificate matches the expected hostnames.

Certificate dates match

Good. The certificate is valid for use at this point of time.

Certificate expires within four weeks

This certificate will expire within four weeks. Plan to replace it before it does.

Certificate has not been revoked

Good. This certificate has not been revoked.

Certificate satisfies Chrome's CT requirements

This certificate contains embedded CT signatures and satisfies Chrome's CT requirements at this time.

Certificate Trust

Determining whether a certificate is considered valid is a complicated process that depends on the exact configuration of the validating party. For trust to be established, the certificate must form a chain that ends with a trusted root. In this section we evaluate the server's certificate against major root stores.

Platform	Trusted
Apple
Google AOSP
Microsoft
Mozilla

Certificate Chain

For a server certificate to be valid, it must be presented as part of a complete and valid certificate chain. The last certificate in the chain should be the root and is usually not included in the configuration.

Leaf certificate

*.simplelogin.io | d9d976b
Not After: 28 Apr 2021 17:14:31 UTC (expires in 22 days 5 hours)
Authentication: RSA 2048 bits (SHA256withRSA)
View details

Names	.simplelogin.co .simplelogin.fr .simplelogin.io .slmail.me simplelogin.co simplelogin.fr simplelogin.io slmail.me
Subject DN	CN=*.simplelogin.io
Subject Key Identifier	e49571c9d20f173aba9553126c4743f575462b7e
Serial	4d7a9c7d78c48803dfb4200ea861adbaf51
Not Before	28 Jan 2021 17:14:31 UTC
Not After	28 Apr 2021 17:14:31 UTC
Validity period	91 days
Key Usage	digitalSignature, keyEncipherment
Extended Key Usage	serverAuth, clientAuth
Must Staple	No
Issuer
Issuer DN	CN=R3, O=Let's Encrypt, C=US
Certification Authority	Let's Encrypt
Validation Type	Domain Validation (DV)
Authority Key Identifier	keyid:142eb317b75856cbae500940e61faf9d8b14c2c6
Parent Certificate	http://r3.i.lencr.org/
OCSP	http://r3.o.lencr.org
Certificate Transparency
Signed Certificate Timestamps	28 Jan 2021 18:14:32 UTC \| DigiCert Yeti2021 Log \| Non-Google (Qualified) 28 Jan 2021 18:14:32 UTC \| Google 'Xenon2021' log \| Google (Qualified)
Required SCTs	2
Fingerprints
SHA1	9e90865347773009dddbac1a8c1d54557b53a639
SHA256	d9d976b088994c0ce7ee29a76eb65ba827488f8fafb9ef0cb73322e35c5c7cea
SPKI SHA256	61e49afb66b86f96c48485ac86140b038b4f18a7239d9f8cb334fd921b71adb6

Intermediate certificate

R3 | 730c1bd
Not After: 29 Sep 2021 19:21:40 UTC (expires in 5 months 23 days)
Authentication: RSA 2048 bits (SHA256withRSA)
View details

Subject DN	CN=R3, O=Let's Encrypt, C=US
Subject Key Identifier	142eb317b75856cbae500940e61faf9d8b14c2c6
Serial	400175048314a4c8218c84a90c16cddf
Not Before	07 Oct 2020 19:21:40 UTC
Not After	29 Sep 2021 19:21:40 UTC
Validity period	358 days
Key Usage	digitalSignature, keyCertSign, cRLSign
Extended Key Usage	serverAuth, clientAuth
Issuer
Issuer DN	CN=DST Root CA X3, O=Digital Signature Trust Co.
Certification Authority	IdenTrust Services, LLC
Validation Type	Not Applicable
Authority Key Identifier	keyid:c4a7b1a47b2c71fadbe14b9075ffc41560858910
Parent Certificate	http://apps.identrust.com/roots/dstrootcax3.p7c
CRL	http://crl.identrust.com/DSTROOTCAX3CRL.crl
CA certificate	Yes (pathlen 0)
Fingerprints
SHA1	48504e974c0dac5b5cd476c8202274b24c8c7172
SHA256	730c1bdcd85f57ce5dc0bba733e5f1ba5a925b2a771d640a26f7a454224dad3b
SPKI SHA256	8d02536c887482bc34ff54e41d2ba659bf85b341a0a20afadb5813dcfbcf286d

Root certificate

DST Root CA X3 | 0687260
Not After: 30 Sep 2021 14:01:15 UTC (expires in 5 months 24 days)
Authentication: RSA 2048 bits (SHA1withRSA)
View details

Subject DN	CN=DST Root CA X3, O=Digital Signature Trust Co.
Subject Key Identifier	c4a7b1a47b2c71fadbe14b9075ffc41560858910
Serial	44afb080d6a327ba893039862ef8406b
Not Before	30 Sep 2000 21:12:19 UTC
Not After	30 Sep 2021 14:01:15 UTC
Key Usage	keyCertSign, cRLSign
Issuer
Issuer DN	CN=DST Root CA X3, O=Digital Signature Trust Co.
Certification Authority	IdenTrust Services, LLC
Validation Type	Self-signed
CA certificate	Yes (pathlen unlimited)
Fingerprints
SHA1	dac9024f54d8f6df94935fb1732638ca6ad77c13
SHA256	0687260331a72403d909f105e69bcf0d32e1bd2493ffc6d9206d11bcd6770739
SPKI SHA256	563b3caf8cfef34c2335caf560a7a95906e8488462eb75ac59784830df9e5b2b

Analysis

Certificate chain is correct

Good. This chain contains all the right certificates and in the right order.

Certificate: www.simplelogin.io

Leaf certificate

*.simplelogin.io
Issuer: Let's Encrypt
Not Before: 28 Jan 2021 17:14:31 UTC
Not After: 28 Apr 2021 17:14:31 UTC (expires in 22 days 5 hours)
Key: RSA 2048 bits
Signature: SHA256withRSA
View details

Names	.simplelogin.co .simplelogin.fr .simplelogin.io .slmail.me simplelogin.co simplelogin.fr simplelogin.io slmail.me
Subject DN	CN=*.simplelogin.io
Subject Key Identifier	e49571c9d20f173aba9553126c4743f575462b7e
Serial	4d7a9c7d78c48803dfb4200ea861adbaf51
Not Before	28 Jan 2021 17:14:31 UTC
Not After	28 Apr 2021 17:14:31 UTC
Validity period	91 days
Key Usage	digitalSignature, keyEncipherment
Extended Key Usage	serverAuth, clientAuth
Must Staple	No
Issuer
Issuer DN	CN=R3, O=Let's Encrypt, C=US
Certification Authority	Let's Encrypt
Validation Type	Domain Validation (DV)
Authority Key Identifier	keyid:142eb317b75856cbae500940e61faf9d8b14c2c6
Parent Certificate	http://r3.i.lencr.org/
OCSP	http://r3.o.lencr.org
Certificate Transparency
Signed Certificate Timestamps	28 Jan 2021 18:14:32 UTC \| DigiCert Yeti2021 Log \| Non-Google (Qualified) 28 Jan 2021 18:14:32 UTC \| Google 'Xenon2021' log \| Google (Qualified)
Required SCTs	2
Fingerprints
SHA1	9e90865347773009dddbac1a8c1d54557b53a639
SHA256	d9d976b088994c0ce7ee29a76eb65ba827488f8fafb9ef0cb73322e35c5c7cea
SPKI SHA256	61e49afb66b86f96c48485ac86140b038b4f18a7239d9f8cb334fd921b71adb6

Analysis

Strong private key

Good. The private key associated with this certificate is secure.

Strong signature algorithm

Good. This certificate uses a strong signature algorithm.

Certificate matches hostname

Good. The provided certificate matches the expected hostnames.

Certificate dates match

Good. The certificate is valid for use at this point of time.

Certificate expires within four weeks

This certificate will expire within four weeks. Plan to replace it before it does.

Certificate has not been revoked

Good. This certificate has not been revoked.

Certificate satisfies Chrome's CT requirements

This certificate contains embedded CT signatures and satisfies Chrome's CT requirements at this time.

Certificate Trust

Determining whether a certificate is considered valid is a complicated process that depends on the exact configuration of the validating party. For trust to be established, the certificate must form a chain that ends with a trusted root. In this section we evaluate the server's certificate against major root stores.

Platform	Trusted
Apple
Google AOSP
Microsoft
Mozilla

Certificate Chain

For a server certificate to be valid, it must be presented as part of a complete and valid certificate chain. The last certificate in the chain should be the root and is usually not included in the configuration.

Leaf certificate

*.simplelogin.io | d9d976b
Not After: 28 Apr 2021 17:14:31 UTC (expires in 22 days 5 hours)
Authentication: RSA 2048 bits (SHA256withRSA)
View details

Names	.simplelogin.co .simplelogin.fr .simplelogin.io .slmail.me simplelogin.co simplelogin.fr simplelogin.io slmail.me
Subject DN	CN=*.simplelogin.io
Subject Key Identifier	e49571c9d20f173aba9553126c4743f575462b7e
Serial	4d7a9c7d78c48803dfb4200ea861adbaf51
Not Before	28 Jan 2021 17:14:31 UTC
Not After	28 Apr 2021 17:14:31 UTC
Validity period	91 days
Key Usage	digitalSignature, keyEncipherment
Extended Key Usage	serverAuth, clientAuth
Must Staple	No
Issuer
Issuer DN	CN=R3, O=Let's Encrypt, C=US
Certification Authority	Let's Encrypt
Validation Type	Domain Validation (DV)
Authority Key Identifier	keyid:142eb317b75856cbae500940e61faf9d8b14c2c6
Parent Certificate	http://r3.i.lencr.org/
OCSP	http://r3.o.lencr.org
Certificate Transparency
Signed Certificate Timestamps	28 Jan 2021 18:14:32 UTC \| DigiCert Yeti2021 Log \| Non-Google (Qualified) 28 Jan 2021 18:14:32 UTC \| Google 'Xenon2021' log \| Google (Qualified)
Required SCTs	2
Fingerprints
SHA1	9e90865347773009dddbac1a8c1d54557b53a639
SHA256	d9d976b088994c0ce7ee29a76eb65ba827488f8fafb9ef0cb73322e35c5c7cea
SPKI SHA256	61e49afb66b86f96c48485ac86140b038b4f18a7239d9f8cb334fd921b71adb6

Intermediate certificate

R3 | 730c1bd
Not After: 29 Sep 2021 19:21:40 UTC (expires in 5 months 23 days)
Authentication: RSA 2048 bits (SHA256withRSA)
View details

Subject DN	CN=R3, O=Let's Encrypt, C=US
Subject Key Identifier	142eb317b75856cbae500940e61faf9d8b14c2c6
Serial	400175048314a4c8218c84a90c16cddf
Not Before	07 Oct 2020 19:21:40 UTC
Not After	29 Sep 2021 19:21:40 UTC
Validity period	358 days
Key Usage	digitalSignature, keyCertSign, cRLSign
Extended Key Usage	serverAuth, clientAuth
Issuer
Issuer DN	CN=DST Root CA X3, O=Digital Signature Trust Co.
Certification Authority	IdenTrust Services, LLC
Validation Type	Not Applicable
Authority Key Identifier	keyid:c4a7b1a47b2c71fadbe14b9075ffc41560858910
Parent Certificate	http://apps.identrust.com/roots/dstrootcax3.p7c
CRL	http://crl.identrust.com/DSTROOTCAX3CRL.crl
CA certificate	Yes (pathlen 0)
Fingerprints
SHA1	48504e974c0dac5b5cd476c8202274b24c8c7172
SHA256	730c1bdcd85f57ce5dc0bba733e5f1ba5a925b2a771d640a26f7a454224dad3b
SPKI SHA256	8d02536c887482bc34ff54e41d2ba659bf85b341a0a20afadb5813dcfbcf286d

Root certificate

DST Root CA X3 | 0687260
Not After: 30 Sep 2021 14:01:15 UTC (expires in 5 months 24 days)
Authentication: RSA 2048 bits (SHA1withRSA)
View details

Subject DN	CN=DST Root CA X3, O=Digital Signature Trust Co.
Subject Key Identifier	c4a7b1a47b2c71fadbe14b9075ffc41560858910
Serial	44afb080d6a327ba893039862ef8406b
Not Before	30 Sep 2000 21:12:19 UTC
Not After	30 Sep 2021 14:01:15 UTC
Key Usage	keyCertSign, cRLSign
Issuer
Issuer DN	CN=DST Root CA X3, O=Digital Signature Trust Co.
Certification Authority	IdenTrust Services, LLC
Validation Type	Self-signed
CA certificate	Yes (pathlen unlimited)
Fingerprints
SHA1	dac9024f54d8f6df94935fb1732638ca6ad77c13
SHA256	0687260331a72403d909f105e69bcf0d32e1bd2493ffc6d9206d11bcd6770739
SPKI SHA256	563b3caf8cfef34c2335caf560a7a95906e8488462eb75ac59784830df9e5b2b

Analysis

Certificate chain is correct

Good. This chain contains all the right certificates and in the right order.

DANE (443)

DNS-based Authentication of Named Entities (DANE) is a bridge between DNSSEC and TLS. In one possible scenario, DANE can be used for public key pinning, building on an existing publicly-trusted certificate. In another approach, it can be used to completely bypass the CA ecosystem and establish trust using DNSSEC alone.

Test passed

Everything seems to be well configured. Well done.

TLSA Record #1: _443._tcp.simplelogin.io.

Specifies which certificate in the chain is being pinned and how validation should be performed.Certificate Usage	Trust anchor assertion / DANE-TA (2)
Determines if the association is made with a certificate or with a public key (via its SPKI structure).Selector	SPKI structure (1)
Determines how matching is done; directly or via a hash. Matching Type	SHA2-256 (1)
Contains the data necessary to perform the matching. Data	60b87575447dcba2a36b7d11ac09fb24a9db406fee12d2cc90180517616e8a18

TLSA Record #2: _443._tcp.simplelogin.io.

Specifies which certificate in the chain is being pinned and how validation should be performed.Certificate Usage	Trust anchor assertion / DANE-TA (2)
Determines if the association is made with a certificate or with a public key (via its SPKI structure).Selector	SPKI structure (1)
Determines how matching is done; directly or via a hash. Matching Type	SHA2-256 (1)
Contains the data necessary to perform the matching. Data	8d02536c887482bc34ff54e41d2ba659bf85b341a0a20afadb5813dcfbcf286d Root certificate: RSA 2048 bits Subject: CN=R3, O=Let's Encrypt, C=US Issuer: CN=DST Root CA X3, O=Digital Signature Trust Co. R3 (RSA 2048 bits)

Analysis

DANE configuration matches

DANE configuration is present for this service and matches the certificate chain.

Valid DANE configuration

Excellent. Your DANE configuration matches the certificate chain(s) provided by the service. Your TLS configuration enjoys the additional benefit of DANE validation.

Cookies

Cookies are small chunks of text that are sent between your browser and a website. They are often essential to the operation of the site and sometimes contain sensitive information. Session cookies sent from secure sites must be explicitly marked as secure to prevent being obtained by active network attackers.

Test passed

Everything seems to be well configured. Well done.

Mixed Content

On virtually all web sites, HTML markup, images, style sheets, JavaScript, and other page resources arrive not only over multiple connections but possibly from multiple servers and sites spread across the entire Internet. For a page to be properly encrypted, it’s necessary that all the content is retrieved over HTTPS. In practice, that’s very often not the case, leading to mixed content security problems.

Test passed

Everything seems to be well configured. Well done.

Embedded Resources

In this section we look at the security of all embedded resources. Mixed active content occurs when there are unprotected scripts or styles embedded in a page. This is typically not allowed by modern browsers. Mixed passive content (images, videos and such) are typically allowed, but shouldn't be present.

0 script(s)
0 out of 0 are secure

0 CSS file(s)
0 out of 0 are secure

2 media file(s)
2 out of 2 are secure View all

Status	Link
Encrypted	https://img.shields.io/...ars/simple-login/app
Encrypted	https://img.shields.io/...e413b20b5376f58db050

Outbound Links

Ideally, an encrypted page should only have links that lead to other encrypted pages. If plaintext links are used, passive network attackers can see where people go after they visit your web site. It's also possible that some sensitive information is leaked in the Referer header.

34 link(s)
34 out of 34 are encrypted View all

Status	Link
Encrypted	https://lespepitestech.com/...nch-tech/simplelogin
Encrypted	https://app.simplelogin.io/auth/login
Encrypted	https://app.simplelogin.io/auth/register
Encrypted	https://app.simplelogin.io/auth/register
Encrypted	https://chrome.google.com/...kdjbpfohgikllaljmgbn
Encrypted	https://addons.mozilla.org/...x/addon/simplelogin/
Encrypted	https://apps.apple.com/app/id1494051017
Encrypted	https://apps.apple.com/app/id1494359858
Encrypted	https://play.google.com/store/apps/details
Encrypted	https://f-droid.org/...ogin.android.fdroid/
Encrypted	https://www.youtube.com/watch
Encrypted	https://soundcloud.com/...es-account-hijacking
Encrypted	https://www.reddit.com/...hat_a_great_service/
Encrypted	https://www.linkedin.com/...-alexoglou-b9366392/
Encrypted	https://www.linkedin.com/in/nncuong/
Encrypted	https://twitter.com/mxschumacher
Encrypted	https://en.wikipedia.org/...iki/Email_forwarding
Encrypted	https://haveibeenpwned.com
Encrypted	https://github.com/simple-login/app
Encrypted	https://github.com/...login/app/projects/1
Encrypted	https://temp-mail.org/en/
Encrypted	https://10minutemail.net
Encrypted	https://www.spamgourmet.com/index.pl
Encrypted	https://github.com/...ple-login/app/issues
Encrypted	https://app.simplelogin.io/auth/register
Encrypted	https://github.com/simple-login
Encrypted	https://github.com/...login/app/projects/1
Encrypted	https://www.upcloud.com/register/
Encrypted	https://www.mydigipassword.com/
Encrypted	https://techlore.tech/
Encrypted	https://docs.simplelogin.io
Encrypted	https://github.com/simple-login/app
Encrypted	https://status.simplelogin.io
Encrypted	https://github.com/...login/app/projects/1

HTTP Strict Transport Security

HTTP Strict Transport Security (HSTS) vastly improves security of the network encryption layer. With HSTS enabled, browsers no longer allow clicking through certificate warnings errors, which are typically trivial to exploit. Additionally, they will no longer submit insecure (plaintext) requests to the site in question, even if asked.

Test passed

Everything seems to be well configured. Well done.

HSTS Policy Main host

URL from which this policy was obtained.Location	https://www.simplelogin.io/
Specifies policy duration. Once activated, HSTS stays in force until this time lapses. Browsers update policy cache duration every time they receive a new HSTS header from a site.max‑age	63,072,000 seconds (about 2 years)
When present, this directive forces HSTS activation on allsubdomains. For best security, HSTS should be deployed on the bare domain name (e.g., example.com) and all its subdomains.includeSubDomains
Presence of this directive indicates that a web site wishes to permanently use HSTS and that its policy information should be preloaded (embedded in browsers).preload

Analysis

Policy is valid

OK. Your HSTS policy uses correct syntax.

Long policy age

Your HSTS policy has a long max-age value, which offers better protection.

Policy covers subdomains

When subdomains are included, network attackers are unable to manufacture arbitrary subdomains to manipulate cookies and trick users.

Redirection from HTTP to HTTPS to the same host

Good. The redirection from HTTP to HTTPS is to the same host. This approach ensures that HSTS is activated on the hostname when it's accessed via plaintext.

Policy preloaded

Excellent. This host is covered by a preloaded HSTS policy.

Preloaded host: simplelogin.io; includeSubDomains=true

HSTS Policy Apex host

URL from which this policy was obtained.Location	https://simplelogin.io/
Specifies policy duration. Once activated, HSTS stays in force until this time lapses. Browsers update policy cache duration every time they receive a new HSTS header from a site.max‑age	63,072,000 seconds (about 2 years)
When present, this directive forces HSTS activation on allsubdomains. For best security, HSTS should be deployed on the bare domain name (e.g., example.com) and all its subdomains.includeSubDomains
Presence of this directive indicates that a web site wishes to permanently use HSTS and that its policy information should be preloaded (embedded in browsers).preload

Analysis

Policy is valid

OK. Your HSTS policy uses correct syntax.

Long policy age

Your HSTS policy has a long max-age value, which offers better protection.

Policy covers subdomains

When subdomains are included, network attackers are unable to manufacture arbitrary subdomains to manipulate cookies and trick users.

Preload intent declared

Good. With the preload directive set, browsers have a green light to embed the HSTS policy.

Redirection from HTTP to HTTPS to the same host

Good. The redirection from HTTP to HTTPS is to the same host. This approach ensures that HSTS is activated on the hostname when it's accessed via plaintext.

Policy preloaded

Excellent. This host is covered by a preloaded HSTS policy.

Preloaded host: simplelogin.io; includeSubDomains=true

HTTP Public Key Pinning

HTTP Public Key Pinning (HPKP) enables site operators to restrict which certificates are considered valid for their domain names. With a valid HPKP configuration, sites can defeat man in the middle (MITM) attacks using fraudulent or misissued certificates. HPKP is an advanced feature, suitable for use by only high-profile web sites.

Feature not implemented or disabled

Your server doesn't support this feature.

Content Security Policy

Content Security Policy (CSP) is a security mechanism that allows web sites control how browsers process their pages. In essence, sites can restrict what types of resources are loaded and from where. CSP policies can be used to defend against cross-site scripting, prevent mixed content issues, as well as report violations for investigation.

Test passed

Everything seems to be well configured. Well done.

Content-Security-Policy

script-src	'self' This parameter shouldn't be used because it reenables insecure behavior that CSP disables by default.'unsafe-inline' This parameter shouldn't be used because it reenables insecure behavior that CSP disables by default.'unsafe-eval' https://cdn.paddle.com/paddle/paddle.js https://gc.zgo.at/count.js https://hcaptcha.com https://*.hcaptcha.com https://plausible.simplelogin.io/js/index.js
child-src	'self' https://hcaptcha.com https://.hcaptcha.com https://.paddle.com https://www.youtube.com
style-src	'self' This parameter shouldn't be used because it reenables insecure behavior that CSP disables by default.'unsafe-inline' https://hcaptcha.com https://*.hcaptcha.com https://cdn.paddle.com

Analysis

Inline scripts are allowed

By default, CSP doesn't allow inline script execution, but this policy overrides that behavior by specifying 'unsafe-inline' in the 'script-src' directive. As a result, all XSS defenses provided by CSP are significantly weakened.

Inline styles are allowed

This policy allows inline styles. Although they are not as bad as inline scripts in terms of security, an injection bug in script area would allow the attacker to modify page appearance.

Dynamic code execution is allowed

By default, CSP doesn't allow dynamic script execution via eval and friends, but this policy overrides that behavior by specifyin 'unsafe-eval' in the 'script-src' directive. As a result, XSS defenses provided by CSP are significantly weakened.

Mixed content not blocked

This CSP policy doesn't use any of the directives designed to handle mixed content. Consider using the 'block-all-mixed-content' and 'upgrade-insecure-requests' directives as appropriate to ensure that no mixed content is allowed.

Form targets not restricted

The 'form-action' directive is not explicitly set. Because this directive doesn't fall back to default sources, this means that all targets are allowed.

Analysis

CSP policy detected

Header: Content-Security-Policy

Value: script-src 'self' 'unsafe-inline' 'unsafe-eval' https://cdn.paddle.com/paddle/paddle.js https://gc.zgo.at/count.js https://hcaptcha.com https://*.hcaptcha.com https://plausible.simplelogin.io/js/index.js; child-src 'self' https://hcaptcha.com https://*.hcaptcha.com https://*.paddle.com https://www.youtube.com; style-src 'self' 'unsafe-inline' https://hcaptcha.com https://*.hcaptcha.com https://cdn.paddle.com

Location: https://simplelogin.io/

Subresource Integrity

Subresource Integrity (SRI) is a new standard that enables browsers to verify the integrity of embedded page resources (e.g., scripts and stylesheets) when they are loaded from third-party web sites. With SRI deployed, remote resources can be used safely, without fear of them being modified by malicious parties.

Test passed

Everything seems to be well configured. Well done.

No external scripts
SRI not needed

No external stylesheets
SRI not needed

Analysis

No remote resources

The homepage of this site doesn't contain any remote resources so SRI is not needed.

Expect CT

Expect-CT is a response HTTP header that web sites can use to monitor problems related to their Certificate Transparency (CT) compliance. Additionally, they can also instruct browsers to reject any certificates in their name that are are not CT-compliant.

Test passed

Everything seems to be well configured. Well done.

Expect-CT Policy

URL from which this policy was obtained.Location	https://www.simplelogin.io/
Specifies policy duration. Once activated, Expect-CT stays in force until this time lapses. Browsers update policy cache duration every time they receive a new Expect-CT header from a site.max‑age	604,800 seconds (about 7 days)
This optional directive controls whether CT compliance will be enforced by your policy. It's useful if you're confident in your configuration and wish to deploy CT before browsers start enforcing it.enforce
This optional directive enables reporting and specifies the endpoint clients should use to submit reports.report-uri	https://simplelogin.report-uri.com/r/d/ct/enforce

Analysis

Header information

Policy text: enforce, max-age=604800, report-uri="https://simplelogin.report-uri.com/r/d/ct/enforce"

Reporting endpoint operational

Good. The reporting endpoint accepted our test submission.

Report URI: https://simplelogin.report-uri.com/r/d/ct/enforce

Expect-CT enabled

Excellent. This web site has a valid Expect-CT policy.

Frame Options

The X-Frame-Options header controls page framing, which occurs when a page is incorporated into some other page, possibly on a different site. If framing is allowed, attackers can employ clever tricks to make victims perform arbitrary actions on your site; they do this by showing their web site while forwarding the victim's clicks to yours.

Test passed

Everything seems to be well configured. Well done.

Analysis

Header information

Name: X-Frame-Options

Value: SAMEORIGIN

Framing allowed from the same origin only

OK. Your site allows page framing only from itself. This should generally be safe, except maybe on sites that host user content.

XSS Protection

Modern browsers ship with built-in defenses against Cross-Site Scripting (XSS), usually known as XSS Auditors. Web sites are allowed to control the defenses if they specify an X-XSS-Protection header in their HTTP responses. Recommended policies are either to block XSS attacks, or disable the defenses if you think false positives are possible. Filtering, where offending fragments of data are removed, is not recommended because it can be abused by attackers to selectively deactivate script files.

Test passed

Everything seems to be well configured. Well done.

Analysis

Header information

Name: X-XSS-Protection

Value: 1; mode=block

Valid configuration

Good. Your configuration enforces blocking when XSS attacks are detected.

Content Type Options

Some browsers use a technique called content sniffing to override response MIME types provided by HTTP servers and interpret responses as something else (usually HTML). This behavior, which could potentially lead to security issues, should be disabled by attaching an X-Content-Type-Options header to all responses.

Test passed

Everything seems to be well configured. Well done.

Analysis

Header information

Name: X-Content-Type-Options

Value: nosniff

Valid configuration

Good. Your configuration is valid. This means that browsers won't try to guess file MIME type on this web site.

HTML Analysis

Analysis of page content, including SRI.

Test passed

Everything seems to be well configured. Well done.

Base URL

https://simplelogin.io/

Active Content

Type	Status	Location
None

Passive Content

Type	Status	Link
media	Third-party	img.shields.io
media	Third-party	img.shields.io

Links

Type	Status	Link
link	Encrypted	lespepitestech.com
link	Encrypted	app.simplelogin.io
link	Encrypted	app.simplelogin.io
link	Encrypted	app.simplelogin.io
link	Encrypted	chrome.google.com
link	Encrypted	addons.mozilla.org
link	Encrypted	apps.apple.com
link	Encrypted	apps.apple.com
link	Encrypted	play.google.com
link	Encrypted	f-droid.org
link	Encrypted	www.youtube.com
link	Encrypted	soundcloud.com
link	Encrypted	www.reddit.com
link	Encrypted	www.linkedin.com
link	Encrypted	www.linkedin.com
link	Encrypted	twitter.com
link	Encrypted	en.wikipedia.org
link	Encrypted	haveibeenpwned.com
link	Encrypted	github.com
link	Encrypted	github.com
link	Encrypted	temp-mail.org
link	Encrypted	10minutemail.net
link	Encrypted	www.spamgourmet.com
link	Encrypted	github.com
link	Encrypted	app.simplelogin.io
link	Encrypted	github.com
link	Encrypted	github.com
link	Encrypted	www.upcloud.com
link	Encrypted	www.mydigipassword.com
link	Encrypted	techlore.tech
link	Encrypted	docs.simplelogin.io
link	Encrypted	github.com
link	Encrypted	status.simplelogin.io
link	Encrypted	github.com

Public Report | simplelogin.io

simplelogin.io

Domain

Email

WWW

Name Server Configuration

DNS Configuration

DNSSEC

Analysis

Useful DNSSEC Tools

Certification Authority Authorization

CAA Policy Information

Analysis

Email (SMTP)

Analysis

Email TLS (SMTP)

TLS Configuration: mx2.simplelogin.co (2a04:3544:1000:1510:8c7a:9cff:fe3c:4e55)

Analysis

TLS Configuration: mx2.simplelogin.co (94.237.125.28)

Analysis

TLS Configuration: mx1.simplelogin.co (2a04:3544:1000:1510:8c7a:9cff:fe3c:4b2c)

Analysis

TLS Configuration: mx1.simplelogin.co (94.237.111.15)

Analysis

Email Certificates (SMTP)

Certificate #1

Analysis

Certificate Chain

Analysis

Certificate #2

Analysis

Certificate Chain

Analysis

Email DANE (SMTP)

DANE: mx1.simplelogin.co (2a04:3544:1000:1510:8c7a:9cff:fe3c:4b2c)

Analysis

DANE: mx1.simplelogin.co (94.237.111.15)

Analysis

DANE: mx2.simplelogin.co (2a04:3544:1000:1510:8c7a:9cff:fe3c:4e55)

Analysis

DANE: mx2.simplelogin.co (94.237.125.28)

Analysis

SPF

SPF Policy Information Main policy

Analysis

SPF Policy Information Included policy

DMARC

DMARC Policy Information

Analysis

MTA Strict Transport Security

MTA-STS Policy Indicator

Analysis

MTA-STS Policy

Analysis

Certificate: mta-sts.simplelogin.io

Analysis

Certificate Chain

Analysis

SMTP TLS Reporting

TLS-RPT Policy

Analysis

HTTP (80)

URL: http://simplelogin.io/

Analysis

URL: http://www.simplelogin.io/

Analysis

HTTP (443)

URL: https://simplelogin.io/

URL: https://www.simplelogin.io/

WWW TLS

TLS Configuration: www.simplelogin.io (2a04:3544:1000:1510:8c7a:9cff:fe3c:4b2c)

Analysis

TLS Configuration: www.simplelogin.io (94.237.111.15)

Analysis

TLS Configuration: simplelogin.io (2a04:3544:1000:1510:8c7a:9cff:fe3c:4b2c)

Analysis

TLS Configuration: simplelogin.io (94.237.111.15)

Analysis

WWW Certificates

Certificate: simplelogin.io