SSL-Tools

SSL check results of hrtmnn.de

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Discover if the mail servers for hrtmnn.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

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Report created Sat, 05 Jul 2025 12:39:23 +0000

The mailservers of hrtmnn.de can be reached through a secure connection.

Servers

Incoming Mails

These servers are responsible for incoming mails to @hrtmnn.de addresses.

Hostname / IP address Priority STARTTLS Certificates Protocol
mail.hrtmnn.de
46.4.92.117
 10
supported
mail.hrtmnn.de
DANE
missing
PFS
supported
Heartbleed
not vulnerable
Weak ciphers
not found
  • TLSv1.2
  • SSLv3
5 s

Outgoing Mails

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

Certificates

First seen at:

CN=mail.hrtmnn.de

Certificate chain
  • mail.hrtmnn.de
    • remaining
    • 384 bit
    • ecdsa-with-SHA384
      • E5
        • remaining
        • 384 bit
        • sha256WithRSAEncryption
          • ISRG Root X1 (Certificate is self-signed.)
            • remaining
            • 4096 bit
            • sha256WithRSAEncryption
Subject
Common Name (CN)
  • mail.hrtmnn.de
Alternative Names
  • mail.hrtmnn.de
Issuer
Country (C)
  • US
Organization (O)
  • Let's Encrypt
Common Name (CN)
  • E5
validity period
Not valid before
2025-06-30
Not valid after
2025-09-28
This certifcate has been verified for the following usages:
  • Digital Signature
  • TLS Web Server Authentication
  • TLS Web Client Authentication
Fingerprints
SHA256
08:A9:74:55:55:21:CE:98:B2:C8:20:9E:EB:84:45:B0:45:11:61:B4:62:46:7F:D8:7C:53:DD:63:C0:F6:F7:8D
SHA1
D8:D9:0C:C0:1B:F8:B5:EC:BE:E9:8C:7F:22:77:AE:F6:53:A7:ED:9D
X509v3 extensions
subjectKeyIdentifier
  • 2F:8B:41:9C:A5:B3:A5:25:0B:FE:BC:8F:1D:FD:B3:4B:14:D4:22:14
authorityKeyIdentifier
  • keyid:9F:2B:5F:CF:3C:21:4F:9D:04:B7:ED:2B:2C:C4:C6:70:8B:D2:D7:0D
authorityInfoAccess
  • CA Issuers - URI:http://e5.i.lencr.org/
certificatePolicies
  • Policy: 2.23.140.1.2.1
crlDistributionPoints
  • Full Name:
  • URI:http://e5.c.lencr.org/78.crl
ct_precert_scts
  • Signed Certificate Timestamp:
  • Version : v1 (0x0)
  • Log ID : 12:F1:4E:34:BD:53:72:4C:84:06:19:C3:8F:3F:7A:13:
  • F8:E7:B5:62:87:88:9C:6D:30:05:84:EB:E5:86:26:3A
  • Timestamp : Jun 30 11:36:27.775 2025 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:45:02:20:38:13:35:97:8E:5C:65:61:01:96:F8:CF:
  • 63:9C:53:C3:89:46:63:67:45:78:17:FA:AA:AC:3D:95:
  • 00:DA:10:60:02:21:00:D5:7E:F7:A6:D8:45:FC:39:06:
  • CA:CD:0A:CC:2E:B4:B0:15:93:51:8D:F1:46:1A:6F:93:
  • A9:D1:C4:F3:CF:47:84
  • 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 : Jun 30 11:36:29.783 2025 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:45:02:21:00:D8:3F:65:D8:11:2C:9C:ED:8B:6C:37:
  • EA:15:B6:91:9D:9E:6D:CC:B5:DC:DA:94:9E:98:59:5F:
  • 0D:3E:41:62:F6:02:20:16:E3:48:6A:34:45:E2:12:02:
  • 19:E4:CD:01:C1:6F:8D:24:2B:B8:45:E3:9A:D7:61:BE:
  • 12:63:3D:09:2E:1C:D2