SSL-Tools

SSL check results of mail.server-ct.de

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Discover if the mail servers for mail.server-ct.de 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

JSON Refresh

Report created Tue, 15 Jul 2025 15:38:26 +0000

The mailservers of mail.server-ct.de can be reached through a secure connection.

Servers

Incoming Mails

These servers are responsible for incoming mails to @mail.server-ct.de addresses.

Hostname / IP address Priority STARTTLS Certificates Protocol
mail.server-ct.de
85.209.50.249
 -
supported
mail.server-ct.de
DANE
missing
PFS
supported
Heartbleed
not vulnerable
Weak ciphers
not found
  • TLSv1.2
  • TLSv1.1
  • TLSv1.0
  • SSLv3
1 s

Outgoing Mails

We have not received any emails from a @mail.server-ct.de address so far. Test mail delivery

Certificates

First seen at:

CN=mail.server-ct.de

Certificate chain
  • mail.server-ct.de
    • remaining
    • 256 bit
    • ecdsa-with-SHA384
      • E6
        • remaining
        • 384 bit
        • sha256WithRSAEncryption
          • ISRG Root X1 (Certificate is self-signed.)
            • remaining
            • 4096 bit
            • sha256WithRSAEncryption
Subject
Common Name (CN)
  • mail.server-ct.de
Alternative Names
  • mail.server-ct.de
Issuer
Country (C)
  • US
Organization (O)
  • Let's Encrypt
Common Name (CN)
  • E6
validity period
Not valid before
2025-07-10
Not valid after
2025-10-08
This certifcate has been verified for the following usages:
  • Digital Signature
  • TLS Web Server Authentication
  • TLS Web Client Authentication
Fingerprints
SHA256
17:72:FA:67:AF:A8:DC:7B:DE:5B:24:D6:36:0A:A5:C2:4C:36:40:B7:08:F5:B5:D4:03:8C:A3:89:EE:49:06:8D
SHA1
01:97:DD:72:31:5A:26:9D:8E:3C:58:EA:08:4A:B4:F1:30:A9:D3:EC
X509v3 extensions
subjectKeyIdentifier
  • 4A:97:99:71:ED:73:AD:B5:D8:A2:7E:8F:78:01:14:40:45:96:A6:03
authorityKeyIdentifier
  • keyid:93:27:46:98:03:A9:51:68:8E:98:D6:C4:42:48:DB:23:BF:58:94:D2
authorityInfoAccess
  • CA Issuers - URI:http://e6.i.lencr.org/
certificatePolicies
  • Policy: 2.23.140.1.2.1
crlDistributionPoints
  • Full Name:
  • URI:http://e6.c.lencr.org/70.crl
ct_precert_scts
  • Signed Certificate Timestamp:
  • Version : v1 (0x0)
  • Log ID : 0D:E1:F2:30:2B:D3:0D:C1:40:62:12:09:EA:55:2E:FC:
  • 47:74:7C:B1:D7:E9:30:EF:0E:42:1E:B4:7E:4E:AA:34
  • Timestamp : Jul 10 12:01:49.209 2025 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:46:02:21:00:CB:31:48:84:11:68:65:9B:97:C9:0E:
  • 43:95:89:F3:0A:BC:E4:CA:05:0A:AE:28:87:F5:7D:1F:
  • 91:55:5C:10:41:02:21:00:DF:5A:DA:5E:8D:C8:E5:0B:
  • F3:CE:D4:CD:2D:91:63:5D:6B:59:C4:FC:5B:77:CE:63:
  • FA:90:EF:24:8D:63:32:81
  • Signed Certificate Timestamp:
  • Version : v1 (0x0)
  • Log ID : CC:FB:0F:6A:85:71:09:65:FE:95:9B:53:CE:E9:B2:7C:
  • 22:E9:85:5C:0D:97:8D:B6:A9:7E:54:C0:FE:4C:0D:B0
  • Timestamp : Jul 10 12:01:49.335 2025 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:45:02:20:53:55:21:F0:83:46:CD:4E:16:EB:D8:3F:
  • 19:7E:80:B5:54:D7:F6:79:F5:82:DE:55:03:AD:78:50:
  • EA:B3:8D:FF:02:21:00:89:26:D7:6B:68:62:84:22:D0:
  • F2:A3:83:7C:7D:9E:F6:B1:F0:04:D0:79:AA:61:0F:E2:
  • A1:F0:4B:86:83:F3:CC