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SSL check results of mail.donhauser-gmbh.de

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Discover if the mail servers for mail.donhauser-gmbh.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 Sun, 10 May 2026 13:06:24 +0000

The mailservers of mail.donhauser-gmbh.de can be reached through a secure connection.

Servers

Incoming Mails

These servers are responsible for incoming mails to @mail.donhauser-gmbh.de addresses.

Hostname / IP address Priority STARTTLS Certificates Protocol
mail.donhauser-gmbh.de
81.27.170.110
 10
supported
donhauser-gmbh.de
DANE
missing
PFS
supported
Heartbleed
not vulnerable
Weak ciphers
not found
  • TLSv1.2
  • TLSv1.1
  • TLSv1.0
  • SSLv3
3 s

Outgoing Mails

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

Certificates

First seen at:

CN=donhauser-gmbh.de

Certificate chain
  • donhauser-gmbh.de
    • remaining
    • 2048 bit
    • sha256WithRSAEncryption
      • R12
        • remaining
        • 2048 bit
        • sha256WithRSAEncryption
          • ISRG Root X1 (Certificate is self-signed.)
            • remaining
            • 4096 bit
            • sha256WithRSAEncryption
Subject
Common Name (CN)
  • donhauser-gmbh.de
Alternative Names
  • *.donhauser-gmbh.de
  • donhauser-gmbh.de
Issuer
Country (C)
  • US
Organization (O)
  • Let's Encrypt
Common Name (CN)
  • R12
validity period
Not valid before
2026-05-10
Not valid after
2026-08-08
This certifcate has been verified for the following usages:
  • Digital Signature
  • Key Encipherment
  • TLS Web Server Authentication
Fingerprints
SHA256
00:AE:B2:83:9F:19:7B:2F:A7:C6:4A:83:04:3F:0A:5F:8C:B0:D8:C6:1E:89:B5:50:9F:FA:62:D7:A7:D5:C9:13
SHA1
0B:A9:C2:8E:E4:18:40:61:0B:70:57:42:4E:BE:39:D1:CA:CE:78:03
X509v3 extensions
subjectKeyIdentifier
  • 86:5B:CA:08:20:88:50:D8:B4:CC:C2:60:0E:33:AE:49:A6:D0:E5:17
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/32.crl
ct_precert_scts
  • Signed Certificate Timestamp:
  • Version : v1 (0x0)
  • Log ID : 94:4E:43:87:FA:EC:C1:EF:81:F3:19:24:26:A8:18:65:
  • 01:C7:D3:5F:38:02:01:3F:72:67:7D:55:37:2E:19:D8
  • Timestamp : May 10 12:43:28.508 2026 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:45:02:21:00:EC:8D:45:A6:03:E9:3E:49:2E:F2:93:
  • 6F:AA:CA:F2:30:89:32:9D:1A:49:55:39:89:11:9E:83:
  • 0C:F0:74:AB:AA:02:20:5A:C6:5A:0B:16:BC:04:68:A7:
  • 1A:7E:CA:C5:31:03:E3:5E:59:CD:A9:34:54:34:09:0D:
  • D4:66:DC:20:D6:8F:F3
  • Signed Certificate Timestamp:
  • Version : v1 (0x0)
  • Log ID : 6C:FE:50:19:43:A8:5E:A9:16:BC:52:D1:33:E4:DC:C9:
  • 1E:F1:41:1C:7D:25:84:20:D1:73:80:9E:18:18:EB:3A
  • Timestamp : May 10 12:43:29.150 2026 GMT
  • Extensions: 00:00:05:00:0A:D7:95:B1
  • Signature : ecdsa-with-SHA256
  • 30:45:02:20:52:68:31:B1:1E:21:DC:C0:9C:08:BB:6D:
  • EE:6A:C7:BE:A9:C1:95:99:23:7E:C6:37:77:09:06:AA:
  • D4:48:E3:F4:02:21:00:D1:0E:44:6D:BF:B7:C6:D6:E8:
  • 6A:2F:A2:D1:BC:F9:6B:0C:66:A9:C3:6D:80:E0:13:97:
  • F0:20:AE:6B:8E:02:DE