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SSL check results of krusty.kundenserver42.de

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Discover if the mail servers for krusty.kundenserver42.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 Tue, 15 Apr 2025 21:19:46 +0000

The mailservers of krusty.kundenserver42.de can be reached through a secure connection.

Servers

Incoming Mails

These servers are responsible for incoming mails to @krusty.kundenserver42.de addresses.

Hostname / IP address Priority STARTTLS Certificates Protocol
krusty.kundenserver42.de
109.234.218.220
 10
supported
krusty.kundenserver42.de
DANE
missing
PFS
supported
Heartbleed
not vulnerable
Weak ciphers
not found
  • TLSv1.2
  • SSLv3
2 s

Outgoing Mails

We have not received any emails from a @krusty.kundenserver42.de address so far. Test mail delivery

Certificates

First seen at:

CN=krusty.kundenserver42.de

Certificate chain
  • krusty.kundenserver42.de
    • remaining
    • 2048 bit
    • sha256WithRSAEncryption
      • R10
        • remaining
        • 2048 bit
        • sha256WithRSAEncryption
          • ISRG Root X1 (Certificate is self-signed.)
            • remaining
            • 4096 bit
            • sha256WithRSAEncryption
Subject
Common Name (CN)
  • krusty.kundenserver42.de
Alternative Names
  • krusty.kundenserver42.de
Issuer
Country (C)
  • US
Organization (O)
  • Let's Encrypt
Common Name (CN)
  • R10
validity period
Not valid before
2025-03-12
Not valid after
2025-06-10
This certifcate has been verified for the following usages:
  • Digital Signature
  • Key Encipherment
  • TLS Web Server Authentication
  • TLS Web Client Authentication
Fingerprints
SHA256
5B:F4:8C:1F:BC:D2:92:51:90:C1:9D:BE:7C:C1:9F:FD:22:74:51:AB:84:4A:08:B1:58:5C:12:40:27:D8:9B:E8
SHA1
3C:70:4E:02:13:7F:4F:F2:E5:67:F7:3A:10:1C:C3:4D:C7:9E:26:F9
X509v3 extensions
subjectKeyIdentifier
  • 47:1B:7D:DE:2F:2B:E7:A2:76:D9:A4:92:78:04:D6:32:4C:22:90:DD
authorityKeyIdentifier
  • keyid:BB:BC:C3:47:A5:E4:BC:A9:C6:C3:A4:72:0C:10:8D:A2:35:E1:C8:E8
authorityInfoAccess
  • OCSP - URI:http://r10.o.lencr.org
  • CA Issuers - URI:http://r10.i.lencr.org/
certificatePolicies
  • Policy: 2.23.140.1.2.1
ct_precert_scts
  • 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 : Mar 12 07:30:34.695 2025 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:44:02:20:1D:5F:EB:84:E9:7C:14:1B:57:2A:11:F2:
  • C0:A7:74:04:E5:50:C9:35:F0:64:A4:92:0B:A8:2E:2A:
  • BF:54:93:36:02:20:38:03:A0:9F:0C:BB:0B:80:CE:8E:
  • AF:C8:BD:37:8C:C5:C3:E2:66:7C:A2:2D:EE:7D:38:9E:
  • 87:C0:11:41:2E:94
  • Signed Certificate Timestamp:
  • Version : v1 (0x0)
  • Log ID : A2:E3:0A:E4:45:EF:BD:AD:9B:7E:38:ED:47:67:77:53:
  • D7:82:5B:84:94:D7:2B:5E:1B:2C:C4:B9:50:A4:47:E7
  • Timestamp : Mar 12 07:30:34.680 2025 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:45:02:20:68:47:58:14:79:D0:E5:25:E8:02:5E:CD:
  • 52:7E:EF:E8:CC:FC:2C:95:1A:FD:19:41:9F:9C:CB:0B:
  • FD:85:35:16:02:21:00:9A:39:11:84:E2:0A:08:44:4E:
  • 2E:4C:68:80:EE:47:92:92:D1:BB:EC:E0:FA:8E:98:80:
  • 5F:05:EA:FC:E7:8A:8B