SSL-Tools

SSL check results of uni-koblenz.de

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Discover if the mail servers for uni-koblenz.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, 05 May 2026 09:48:40 +0000

The mailservers of uni-koblenz.de can be reached through a secure connection.

Servers

Incoming Mails

These servers are responsible for incoming mails to @uni-koblenz.de addresses.

Hostname / IP address Priority STARTTLS Certificates Protocol
mx.uni-koblenz.de
2001:4c80:50::867
 5
supported
mx.uni-koblenz.de
DANE
missing
PFS
supported
Heartbleed
not vulnerable
Weak ciphers
not found
  • TLSv1.2
  • SSLv3
1 s
mx.uni-koblenz.de
141.26.8.103
 5
supported
mx.uni-koblenz.de
DANE
missing
PFS
supported
Heartbleed
not vulnerable
Weak ciphers
not found
  • TLSv1.2
  • SSLv3
1 s

Outgoing Mails

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

Certificates

First seen at:

CN=mx.uni-koblenz.de

Certificate chain
  • mx.uni-koblenz.de
    • 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)
  • mx.uni-koblenz.de
Alternative Names
  • mx.uni-koblenz.de
Issuer
Country (C)
  • US
Organization (O)
  • Let's Encrypt
Common Name (CN)
  • E7
validity period
Not valid before
2026-03-31
Not valid after
2026-06-29
This certifcate has been verified for the following usages:
  • Digital Signature
  • TLS Web Server Authentication
Fingerprints
SHA256
7A:C3:9A:C4:29:D0:6F:E9:66:0D:47:AA:85:50:7F:A5:94:AD:EC:36:7F:6B:C0:CB:51:D6:B0:BF:12:3A:C7:3E
SHA1
2C:D5:98:09:47:59:AB:9F:27:40:68:B7:C9:5E:E9:EF:69:1C:68:8C
X509v3 extensions
subjectKeyIdentifier
  • ED:12:41:AD:98:BF:5D:FE:D2:13:4E:4D:E4:DA:8F:69:8F:31:A9:00
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/95.crl
ct_precert_scts
  • Signed Certificate Timestamp:
  • Version : v1 (0x0)
  • Log ID : CB:38:F7:15:89:7C:84:A1:44:5F:5B:C1:DD:FB:C9:6E:
  • F2:9A:59:CD:47:0A:69:05:85:B0:CB:14:C3:14:58:E7
  • Timestamp : Mar 31 08:36:22.943 2026 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:46:02:21:00:D8:34:47:FE:34:08:CD:B0:CF:86:56:
  • C6:D3:00:0E:11:A7:73:97:11:C8:F7:DB:38:1B:F2:18:
  • AA:85:F7:4F:90:02:21:00:D6:32:EE:7D:E9:08:87:5C:
  • D4:C3:B5:15:4F:DF:57:A8:32:2D:3F:94:28:86:A0:34:
  • EB:44:B4:F6:D3:05:61:F2
  • Signed Certificate Timestamp:
  • Version : v1 (0x0)
  • Log ID : 1A:8B:9D:69:4A:57:98:C8:99:A0:CA:88:BD:F4:8F:C0:
  • B4:56:60:CC:C3:60:0D:1F:71:F4:69:FF:C7:D1:AC:A3
  • Timestamp : Mar 31 08:36:23.284 2026 GMT
  • Extensions: 00:00:05:00:59:CB:79:AD
  • Signature : ecdsa-with-SHA256
  • 30:45:02:20:0C:89:DA:60:32:A6:41:0C:13:E4:77:41:
  • 8B:4C:B6:D0:D4:96:59:20:F8:DF:EE:49:FB:EA:7B:A6:
  • 17:09:61:43:02:21:00:87:68:AE:C8:F1:64:96:9F:22:
  • 2E:9A:E2:D2:72:F8:3D:F9:AE:52:8F:AF:26:DD:A1:CD:
  • A7:68:86:6A:B8:A7:29