SSL-Tools

SSL check results of blackfur.gay

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Discover if the mail servers for blackfur.gay can be reached through a secure connection.

To establish a secure connection a mail server has to offer STARTTLS (SSL), a trustworthy SSL certificate, support for the Diffie-Hellman-Algorithm to guarantee Perfect Forward Secrecy and must not be vulnerable against the Heartbleed attack. Futhermore we recommend using end-to-end encryption with GnuPG.

Summary

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Report created Mon, 16 Feb 2026 14:15:40 +0000

The mailservers of blackfur.gay can be reached through a secure connection.

Servers

Incoming Mails

These servers are responsible for incoming mails to @blackfur.gay addresses.

Hostname / IP address Priority STARTTLS Certificates Protocol
mail.blackfur.gay
2a12:edc0:4:9d12::1
 0
supported
mail.blackfur.gay
DANE
missing
PFS
supported
Heartbleed
not vulnerable
Weak ciphers
not found
  • TLSv1.2
  • SSLv3
7 s
mail.blackfur.gay
212.87.215.48
 0
supported
mail.blackfur.gay
DANE
missing
PFS
supported
Heartbleed
not vulnerable
Weak ciphers
not found
  • TLSv1.2
  • SSLv3
7 s

Outgoing Mails

We have not received any emails from a @blackfur.gay address so far. Test mail delivery

Certificates

First seen at:

CN=mail.blackfur.gay

Certificate chain
  • mail.blackfur.gay
    • remaining
    • 256 bit
    • ecdsa-with-SHA384
      • E7
        • remaining
        • 384 bit
        • sha256WithRSAEncryption
          • ISRG Root X1 (Certificate is self-signed.)
            • remaining
            • 4096 bit
            • sha256WithRSAEncryption
Subject
Common Name (CN)
  • mail.blackfur.gay
Alternative Names
  • mail.blackfur.gay
Issuer
Country (C)
  • US
Organization (O)
  • Let's Encrypt
Common Name (CN)
  • E7
validity period
Not valid before
2026-02-13
Not valid after
2026-05-14
This certifcate has been verified for the following usages:
  • Digital Signature
  • TLS Web Server Authentication
Fingerprints
SHA256
F0:A6:FD:9A:87:8C:6A:5A:24:3D:4B:E1:DB:CF:13:82:1B:54:C4:38:45:8F:A9:55:90:7A:04:B8:20:F0:DC:C3
SHA1
28:39:EC:2F:68:F7:25:C1:40:5F:D6:B6:D4:EF:9E:3C:BA:46:78:DA
X509v3 extensions
subjectKeyIdentifier
  • B9:04:CB:A2:F5:46:52:4B:24:FE:64:64:92:69:1D:B7:86:3F:26:E7
authorityKeyIdentifier
  • keyid:AE:48:9E:DC:87:1D:44:A0:6F:DA:A2:E5:60:74:04:78:C2:9C:00:80
authorityInfoAccess
  • CA Issuers - URI:http://e7.i.lencr.org/
certificatePolicies
  • Policy: 2.23.140.1.2.1
crlDistributionPoints
  • Full Name:
  • URI:http://e7.c.lencr.org/79.crl
ct_precert_scts
  • Signed Certificate Timestamp:
  • Version : v1 (0x0)
  • Log ID : 49:9C:9B:69:DE:1D:7C:EC:FC:36:DE:CD:87:64:A6:B8:
  • 5B:AF:0A:87:80:19:D1:55:52:FB:E9:EB:29:DD:F8:C3
  • Timestamp : Feb 13 22:22:51.371 2026 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:46:02:21:00:B7:EC:B0:2E:44:7E:F4:B7:17:0B:24:
  • 88:5A:73:FE:46:D1:46:F4:41:FC:F3:61:29:8A:9D:6D:
  • 0C:D9:49:2A:02:02:21:00:81:47:5D:BE:10:71:2B:91:
  • 68:F6:9A:C6:EA:0D:F8:AF:AA:31:04:A8:26:51:3C:5B:
  • C9:04:AC:FB:10:48:3F:A0
  • Signed Certificate Timestamp:
  • Version : v1 (0x0)
  • Log ID : E3:23:8D:F2:8D:A2:88:E0:AA:E0:AC:F0:FA:90:C9:85:
  • F0:B6:BF:F5:D2:A5:27:B0:01:FC:1C:44:58:C4:B6:E8
  • Timestamp : Feb 13 22:22:51.523 2026 GMT
  • Extensions: 00:00:05:00:32:7E:62:6A
  • Signature : ecdsa-with-SHA256
  • 30:45:02:20:12:E6:AB:64:54:23:3C:AB:41:A8:2E:29:
  • 49:D2:53:BD:69:9F:5C:98:06:6B:A4:21:CD:1D:A9:82:
  • 4C:E1:F3:65:02:21:00:B3:7C:D2:32:91:F7:52:A6:03:
  • 49:48:21:AD:5D:F9:E5:3D:94:CC:39:C2:01:28:BA:0C:
  • E0:BA:C4:5F:E8:43:AF