SSL-Tools

SSL check results of mail.rth.dk

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Discover if the mail servers for mail.rth.dk 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 Sun, 26 Apr 2026 00:30:27 +0000

The mailservers of mail.rth.dk can be reached through a secure connection.

Servers

Incoming Mails

These servers are responsible for incoming mails to @mail.rth.dk addresses.

Hostname / IP address Priority STARTTLS Certificates Protocol
mail.rth.dk
130.225.166.226
 -
supported
mail.rth.dk
DANE
missing
PFS
supported
Heartbleed
not vulnerable
Weak ciphers
not found
  • TLSv1.2
  • TLSv1.1
  • TLSv1.0
  • SSLv3
2 s

Outgoing Mails

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

Certificates

First seen at:

CN=mail.rth.dk

Certificate chain
  • mail.rth.dk
    • remaining
    • 2048 bit
    • sha256WithRSAEncryption
      • R12
        • remaining
        • 2048 bit
        • sha256WithRSAEncryption
          • ISRG Root X1 (Certificate is self-signed.)
            • remaining
            • 4096 bit
            • sha256WithRSAEncryption
Subject
Common Name (CN)
  • mail.rth.dk
Alternative Names
  • mail.rth.dk
Issuer
Country (C)
  • US
Organization (O)
  • Let's Encrypt
Common Name (CN)
  • R12
validity period
Not valid before
2026-02-22
Not valid after
2026-05-23
This certifcate has been verified for the following usages:
  • Digital Signature
  • Key Encipherment
  • TLS Web Server Authentication
Fingerprints
SHA256
B3:D1:DC:34:39:F5:23:BA:66:C4:07:A0:70:B0:66:5C:DE:98:2A:D9:85:B2:CF:B7:09:AE:6A:55:7A:56:AE:10
SHA1
08:FA:BD:C2:08:BE:A7:39:F8:10:40:48:7A:B4:C1:97:E6:E6:8D:29
X509v3 extensions
subjectKeyIdentifier
  • 9D:61:CB:59:31:35:67:D2:0D:61:8F:FE:FB:F9:FD:B8:B3:A2:EA:2E
authorityKeyIdentifier
  • keyid:00:B5:29:F2:2D:8E:6F:31:E8:9B:4C:AD:78:3E:FA:DC:E9:0C:D1:D2
authorityInfoAccess
  • CA Issuers - URI:http://r12.i.lencr.org/
certificatePolicies
  • Policy: 2.23.140.1.2.1
crlDistributionPoints
  • Full Name:
  • URI:http://r12.c.lencr.org/94.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 22 14:36:15.382 2026 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:45:02:20:65:04:13:17:24:EA:E9:38:A2:73:47:0B:
  • 02:D5:DE:16:1D:12:E2:02:32:46:84:8D:D8:68:33:22:
  • 4E:67:7B:07:02:21:00:9F:7B:82:39:6C:80:7D:B2:F0:
  • CD:BE:E7:BB:14:08:3E:C2:6D:EB:D6:3C:19:6E:CC:25:
  • CB:47:62:92:63:BD:BF
  • 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 22 14:36:15.585 2026 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:45:02:20:5C:84:8C:EA:DC:96:2E:86:5B:DE:31:4B:
  • 39:46:EF:1B:3D:B4:41:5D:27:3E:A8:1A:C2:12:ED:85:
  • 79:F3:7D:3A:02:21:00:D6:D3:13:3B:C3:A3:26:99:32:
  • F9:68:79:C2:B7:D8:4B:F3:83:80:7C:FB:B2:F8:66:60:
  • D9:AC:76:E3:74:33:CA