SSL-Tools

SSL check results of mjau.cc

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Discover if the mail servers for mjau.cc 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 14:26:17 +0000

The mailservers of mjau.cc can be reached through a secure connection.

Servers

Incoming Mails

These servers are responsible for incoming mails to @mjau.cc addresses.

Hostname / IP address Priority STARTTLS Certificates Protocol
kanelbulle.mjau.cc
2001:9b0:278:5200::2000
 10
supported
mjau.cc
DANE
missing
PFS
supported
Heartbleed
not vulnerable
Weak ciphers
not found
  • TLSv1.2
  • SSLv3
8 s
kanelbulle.mjau.cc
109.228.186.67
 10
supported
mjau.cc
DANE
missing
PFS
supported
Heartbleed
not vulnerable
Weak ciphers
not found
  • TLSv1.2
  • SSLv3
8 s

Outgoing Mails

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

Certificates

First seen at:

CN=mjau.cc

Certificate chain
  • mjau.cc
    • remaining
    • 256 bit
    • ecdsa-with-SHA384
      • E8
        • remaining
        • 384 bit
        • sha256WithRSAEncryption
          • ISRG Root X1 (Certificate is self-signed.)
            • remaining
            • 4096 bit
            • sha256WithRSAEncryption
Subject
Common Name (CN)
  • mjau.cc
Alternative Names
  • *.laboratorium.mjau.cc
  • *.mjau.cc
  • mjau.cc
Issuer
Country (C)
  • US
Organization (O)
  • Let's Encrypt
Common Name (CN)
  • E8
validity period
Not valid before
2026-02-04
Not valid after
2026-05-05
This certifcate has been verified for the following usages:
  • Digital Signature
  • TLS Web Server Authentication
  • TLS Web Client Authentication
Fingerprints
SHA256
D0:3E:74:E6:66:F9:BB:61:84:1A:5A:2E:0A:3D:6B:B4:A7:92:6B:B9:40:2E:3E:F4:FD:58:23:5B:D3:33:6F:A9
SHA1
4E:3C:EC:14:69:47:48:55:18:1B:00:1F:7B:CE:08:33:EE:18:6A:5F
X509v3 extensions
subjectKeyIdentifier
  • 0A:C9:AD:CB:48:F9:70:61:99:5F:66:4A:D5:D5:5A:40:91:77:55:11
authorityKeyIdentifier
  • keyid:8F:0D:13:A2:F6:2E:7E:D1:50:6C:33:18:38:5D:59:8E:23:72:91:CA
authorityInfoAccess
  • CA Issuers - URI:http://e8.i.lencr.org/
certificatePolicies
  • Policy: 2.23.140.1.2.1
crlDistributionPoints
  • Full Name:
  • URI:http://e8.c.lencr.org/125.crl
ct_precert_scts
  • Signed Certificate Timestamp:
  • Version : v1 (0x0)
  • Log ID : 71:7E:95:F3:C2:38:8A:6D:B1:E3:84:49:3D:31:E1:5A:
  • A9:62:08:76:2D:42:00:E0:05:0C:D0:67:B5:A6:61:E2
  • Timestamp : Feb 4 20:23:57.808 2026 GMT
  • Extensions: 00:00:05:00:08:9E:7A:99
  • Signature : ecdsa-with-SHA256
  • 30:45:02:20:31:F5:24:5B:86:2F:08:B6:46:23:30:84:
  • 0F:8B:33:CC:66:A3:A9:B1:4F:5B:3B:23:DD:92:8C:20:
  • C8:99:6F:32:02:21:00:8A:B2:05:60:1C:51:D3:DB:C7:
  • 21:FE:D5:B0:C3:EB:9F:32:8F:4F:C4:88:02:0F:3D:1E:
  • 12:05:29:FE:B2:13:54
  • Signed Certificate Timestamp:
  • Version : v1 (0x0)
  • Log ID : D1:6E:A9:A5:68:07:7E:66:35:A0:3F:37:A5:DD:BC:03:
  • A5:3C:41:12:14:D4:88:18:F5:E9:31:B3:23:CB:95:04
  • Timestamp : Feb 4 20:23:59.952 2026 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:45:02:21:00:EE:4C:FA:89:3F:9E:20:A0:93:57:D5:
  • E3:A5:54:9A:16:49:FB:C1:DC:C9:E8:44:4B:75:7B:25:
  • 54:19:5D:40:0B:02:20:68:66:EA:9A:9A:6A:44:D7:AC:
  • 48:8C:97:92:DE:59:AD:5E:2F:B2:32:B4:B3:45:07:19:
  • 9C:70:1A:4B:79:E0:08