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SSL check results of co103.cows-server.de

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Discover if the mail servers for co103.cows-server.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, 22 Oct 2024 10:52:31 +0000

The mailservers of co103.cows-server.de can be reached through a secure connection.

Servers

Incoming Mails

These servers are responsible for incoming mails to @co103.cows-server.de addresses.

Hostname / IP address Priority STARTTLS Certificates Protocol
co103.cows-server.de
185.124.232.103
 -
supported
co103.cows-server.de
DANE
missing
PFS
supported
Heartbleed
not vulnerable
Weak ciphers
not found
  • TLSv1.2
  • SSLv3
2 s

Outgoing Mails

We have not received any emails from a @co103.cows-server.de address so far. Test mail delivery

Certificates

First seen at:

CN=co103.cows-server.de

Certificate chain
  • co103.cows-server.de
    • remaining
    • 256 bit
    • ecdsa-with-SHA384
      • E5
        • remaining
        • 384 bit
        • sha256WithRSAEncryption
          • ISRG Root X1 (Certificate is self-signed.)
            • remaining
            • 4096 bit
            • sha256WithRSAEncryption
Subject
Common Name (CN)
  • co103.cows-server.de
Alternative Names
  • co103.cows-server.de
Issuer
Country (C)
  • US
Organization (O)
  • Let's Encrypt
Common Name (CN)
  • E5
validity period
Not valid before
2024-10-19
Not valid after
2025-01-17
This certifcate has been verified for the following usages:
  • Digital Signature
  • TLS Web Server Authentication
  • TLS Web Client Authentication
Fingerprints
SHA256
81:1C:D7:CA:14:90:0B:84:5F:27:AB:33:15:31:7A:ED:E1:32:BF:8A:14:8F:A4:29:DE:D6:4B:CD:FA:86:5C:F9
SHA1
8C:6B:FA:2C:D0:DA:41:2D:86:10:A5:A0:51:3F:38:55:F9:87:86:AF
X509v3 extensions
subjectKeyIdentifier
  • F9:A7:1B:F3:67:33:E3:02:CE:03:E1:EC:4C:F2:5F:74:13:02:D8:52
authorityKeyIdentifier
  • keyid:9F:2B:5F:CF:3C:21:4F:9D:04:B7:ED:2B:2C:C4:C6:70:8B:D2:D7:0D
authorityInfoAccess
  • OCSP - URI:http://e5.o.lencr.org
  • CA Issuers - URI:http://e5.i.lencr.org/
certificatePolicies
  • Policy: 2.23.140.1.2.1
ct_precert_scts
  • Signed Certificate Timestamp:
  • Version : v1 (0x0)
  • Log ID : 13:4A:DF:1A:B5:98:42:09:78:0C:6F:EF:4C:7A:91:A4:
  • 16:B7:23:49:CE:58:57:6A:DF:AE:DA:A7:C2:AB:E0:22
  • Timestamp : Oct 19 07:21:17.023 2024 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:44:02:20:2A:93:22:C0:B3:E3:B9:79:0C:B6:63:E9:
  • ED:6E:B1:46:FD:87:E6:C0:7D:67:C0:0D:62:BA:10:41:
  • 92:F9:07:25:02:20:0D:42:83:14:E3:4C:4E:93:D1:52:
  • 0A:C7:CF:67:F9:2A:8B:B6:34:5A:C5:A5:BC:36:CF:61:
  • F3:91:35:37:0B:47
  • Signed Certificate Timestamp:
  • Version : v1 (0x0)
  • Log ID : 7D:59:1E:12:E1:78:2A:7B:1C:61:67:7C:5E:FD:F8:D0:
  • 87:5C:14:A0:4E:95:9E:B9:03:2F:D9:0E:8C:2E:79:B8
  • Timestamp : Oct 19 07:21:16.489 2024 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:44:02:20:79:F9:16:B3:7E:CE:5C:04:FE:36:C7:B9:
  • 6A:97:B8:F0:40:F1:D0:2D:DF:3B:57:F5:AC:56:EF:AE:
  • 25:8D:A0:8D:02:20:55:B3:24:C2:92:26:0F:5B:AF:9A:
  • 5A:D1:4A:14:29:FF:18:55:14:A4:0B:D9:38:D3:C9:8D:
  • 0C:D5:C6:4A:A7:AE