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SSL check results of mail-neu.kzvlb.de

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Discover if the mail servers for mail-neu.kzvlb.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 Fri, 07 Nov 2025 11:41:38 +0000

The mailservers of mail-neu.kzvlb.de can be reached through a secure connection.

Servers

Incoming Mails

These servers are responsible for incoming mails to @mail-neu.kzvlb.de addresses.

Hostname / IP address Priority STARTTLS Certificates Protocol
mail-neu.kzvlb.de
104.151.118.179
 -
supported
mail-neu.kzvlb.de
DANE
missing
PFS
supported
Heartbleed
not vulnerable
Weak ciphers
not found
  • TLSv1.2
  • TLSv1.1
  • TLSv1.0
  • SSLv3
7 s

Outgoing Mails

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

Certificates

First seen at:

CN=mail-neu.kzvlb.de

Certificate chain
  • mail-neu.kzvlb.de
    • 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-neu.kzvlb.de
Alternative Names
  • mail-neu.kzvlb.de
Issuer
Country (C)
  • US
Organization (O)
  • Let's Encrypt
Common Name (CN)
  • R12
validity period
Not valid before
2025-11-06
Not valid after
2026-02-04
This certifcate has been verified for the following usages:
  • Digital Signature
  • Key Encipherment
  • TLS Web Server Authentication
  • TLS Web Client Authentication
Fingerprints
SHA256
3A:56:1B:3D:51:C7:70:DC:E6:63:DE:E6:EC:50:B9:E6:80:80:EB:F6:58:F3:8A:4A:E6:15:FF:E4:88:A8:78:76
SHA1
A3:3E:34:7D:A9:31:EB:75:60:FF:1A:91:57:4A:1A:D4:EC:2E:B2:94
X509v3 extensions
subjectKeyIdentifier
  • A5:A3:16:70:49:25:5F:C6:9A:A1:28:3C:43:6A:0E:46:76:E9:57:72
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/44.crl
ct_precert_scts
  • Signed Certificate Timestamp:
  • Version : v1 (0x0)
  • Log ID : 64:11:C4:6C:A4:12:EC:A7:89:1C:A2:02:2E:00:BC:AB:
  • 4F:28:07:D4:1E:35:27:AB:EA:FE:D5:03:C9:7D:CD:F0
  • Timestamp : Nov 6 07:30:06.098 2025 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:45:02:21:00:D8:89:92:13:BD:4D:32:E0:DA:BF:86:
  • 1E:A8:EC:B6:6A:41:E4:58:6F:9C:B5:98:76:C9:59:DE:
  • 4E:47:91:15:18:02:20:64:4D:F2:15:49:E7:C6:B4:89:
  • 39:40:95:B9:17:F7:08:1E:2D:60:45:4B:2E:6E:BF:A3:
  • 85:29:F6:C8:4B:A4:62
  • Signed Certificate Timestamp:
  • Version : v1 (0x0)
  • Log ID : 19:86:D4:C7:28:AA:6F:FE:BA:03:6F:78:2A:4D:01:91:
  • AA:CE:2D:72:31:0F:AE:CE:5D:70:41:2D:25:4C:C7:D4
  • Timestamp : Nov 6 07:30:06.110 2025 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:44:02:20:43:2A:4B:FB:F1:85:52:90:52:A1:2F:D0:
  • 3F:C5:10:29:DE:C9:7F:11:FE:D8:1A:1F:0D:07:A5:EC:
  • E7:65:FE:0E:02:20:7F:15:E4:BA:2D:9C:67:B3:A8:C2:
  • DB:8C:EE:95:02:FF:77:71:D0:76:71:FA:EA:1C:3B:AF:
  • 56:34:9F:16:35:6E