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SSL check results of onvalue.de

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Discover if the mail servers for onvalue.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 Wed, 08 Apr 2026 07:05:41 +0000

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

Servers

Incoming Mails

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

Hostname / IP address Priority STARTTLS Certificates Protocol
mail.bordemann.com
142.132.161.201
 30
supported
mail.bordemann.com
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 @onvalue.de address so far. Test mail delivery

Certificates

First seen at:

CN=mail.bordemann.com

Certificate chain
  • mail.bordemann.com
    • remaining
    • 4096 bit
    • sha256WithRSAEncryption
      • R12
        • remaining
        • 2048 bit
        • sha256WithRSAEncryption
          • ISRG Root X1 (Certificate is self-signed.)
            • remaining
            • 4096 bit
            • sha256WithRSAEncryption
Subject
Common Name (CN)
  • mail.bordemann.com
Alternative Names
  • autoconfig.bordemann.com
  • autodiscover.bordemann.com
  • mail.bordemann.com
  • mail.onvalue.de
Issuer
Country (C)
  • US
Organization (O)
  • Let's Encrypt
Common Name (CN)
  • R12
validity period
Not valid before
2026-03-13
Not valid after
2026-06-11
This certifcate has been verified for the following usages:
  • Digital Signature
  • Key Encipherment
  • TLS Web Server Authentication
Fingerprints
SHA256
00:A2:17:BC:31:74:94:49:A1:65:E7:81:F3:79:BE:A7:CE:79:10:48:E2:0B:27:12:E1:34:16:C4:0C:C1:29:7E
SHA1
69:59:47:55:70:33:C0:E3:39:36:17:67:85:F2:19:DD:22:1C:51:F2
X509v3 extensions
subjectKeyIdentifier
  • 02:DC:EA:89:60:D4:A6:81:5B:3D:62:C4:64:96:C4:E1:D9:B3:0D:25
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/17.crl
ct_precert_scts
  • Signed Certificate Timestamp:
  • Version : v1 (0x0)
  • Log ID : 0E:57:94:BC:F3:AE:A9:3E:33:1B:2C:99:07:B3:F7:90:
  • DF:9B:C2:3D:71:32:25:DD:21:A9:25:AC:61:C5:4E:21
  • Timestamp : Mar 13 02:03:29.550 2026 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:45:02:21:00:F5:5D:40:10:A6:E9:71:C8:91:91:37:
  • FC:24:1B:86:2C:6A:27:26:D2:4E:A2:61:26:DE:4E:3C:
  • 22:86:F4:42:2B:02:20:49:1E:53:B3:E8:03:79:C9:95:
  • 95:88:56:59:C6:5C:7B:24:BD:58:5D:51:1B:37:F0:60:
  • 7F:1D:AD:60:3B:69:A1
  • Signed Certificate Timestamp:
  • Version : v1 (0x0)
  • Log ID : E3:23:8D:F2:8D:A2:88:E0:AA:E0:AC:F0:FA:90:C9:85:
  • F0:B6:BF:F5:D2:A5:27:B0:01:FC:1C:44:58:C4:B6:E8
  • Timestamp : Mar 13 02:03:30.524 2026 GMT
  • Extensions: 00:00:05:00:35:67:95:3B
  • Signature : ecdsa-with-SHA256
  • 30:45:02:20:53:38:9D:B0:1D:83:50:77:C6:90:48:F9:
  • 26:D9:22:87:C0:82:E9:55:D9:07:7B:B1:E7:99:F9:FE:
  • 55:EE:23:1A:02:21:00:F5:8C:CE:50:6E:5B:27:49:EF:
  • 27:46:53:5D:62:62:57:DF:8E:2D:67:A4:BC:E6:CC:02:
  • E6:2A:AB:B7:12:69:36