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SSL check results of czichelski.de

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Discover if the mail servers for czichelski.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, 15 Jul 2026 18:57:55 +0000

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

Servers

Incoming Mails

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

Hostname / IP address Priority STARTTLS Certificates Protocol
mx.worldserver.net
217.13.200.138
 0
supported
worldserver.net
DANE
missing
PFS
supported
Heartbleed
not vulnerable
Weak ciphers
not found
  • TLSv1.2
  • SSLv3
1 s

Outgoing Mails

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

Certificates

First seen at:

CN=worldserver.net

Certificate chain
  • worldserver.net
    • remaining
    • 256 bit
    • ecdsa-with-SHA384
      • E7
        • remaining
        • 384 bit
        • sha256WithRSAEncryption
          • ISRG Root X1 (Certificate is self-signed.)
            • remaining
            • 4096 bit
            • sha256WithRSAEncryption
Subject
Common Name (CN)
  • worldserver.net
Alternative Names
  • *.worldserver.net
  • worldserver.net
Issuer
Country (C)
  • US
Organization (O)
  • Let's Encrypt
Common Name (CN)
  • E7
validity period
Not valid before
2026-05-27
Not valid after
2026-08-25
This certifcate has been verified for the following usages:
  • Digital Signature
  • TLS Web Server Authentication
Fingerprints
SHA256
24:EC:43:B6:D0:FB:06:4A:12:93:C5:B7:9F:DE:00:8B:1B:B9:63:86:B3:23:BB:83:7D:7C:DD:2C:61:F2:F7:8B
SHA1
3F:02:D1:38:96:A4:D8:F0:D2:C3:5A:EF:92:96:77:44:82:53:07:E1
X509v3 extensions
subjectKeyIdentifier
  • 24:88:2A:5C:43:E0:B6:D0:A7:DB:F3:44:F1:68:DA:16:C0:0E:96:78
authorityKeyIdentifier
  • keyid:AE:48:9E:DC:87:1D:44:A0:6F:DA:A2:E5:60:74:04:78:C2:9C:00:80
authorityInfoAccess
  • CA Issuers - URI:http://e7.i.lencr.org/
certificatePolicies
  • Policy: 2.23.140.1.2.1
crlDistributionPoints
  • Full Name:
  • URI:http://e7.c.lencr.org/63.crl
ct_precert_scts
  • Signed Certificate Timestamp:
  • Version : v1 (0x0)
  • Log ID : D7:6D:7D:10:D1:A7:F5:77:C2:C7:E9:5F:D7:00:BF:F9:
  • 82:C9:33:5A:65:E1:D0:B3:01:73:17:C0:C8:C5:69:77
  • Timestamp : May 27 10:07:16.688 2026 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:45:02:21:00:FE:8B:F4:AA:CB:61:53:BE:3D:84:59:
  • 73:F2:36:CE:DA:4C:16:3E:96:A9:F7:A6:5E:73:83:82:
  • 51:33:AB:95:D3:02:20:32:B6:17:60:EB:C4:96:62:92:
  • E8:AD:B4:80:CB:74:F8:36:6E:7E:18:57:82:E7:D0:E0:
  • 0A:5A:EB:7E:0C:A8:81
  • Signed Certificate Timestamp:
  • Version : v1 (0x0)
  • Log ID : A8:26:CB:E3:0A:C6:35:12:46:53:3F:E0:65:F1:4F:19:
  • D9:6E:19:08:13:C4:1D:D9:6D:79:00:B3:12:3C:55:27
  • Timestamp : May 27 10:07:16.946 2026 GMT
  • Extensions: 00:00:05:00:0C:C5:81:FA
  • Signature : ecdsa-with-SHA256
  • 30:45:02:21:00:BC:03:FB:E2:1A:FF:F6:AE:05:50:2C:
  • D7:C4:45:D8:6B:81:68:78:80:47:7E:05:FB:67:74:68:
  • 94:7F:87:89:BF:02:20:61:52:1F:9D:2C:7C:C9:37:B6:
  • F5:60:A8:64:46:30:45:E9:54:0A:A7:6D:C3:3C:0F:D6:
  • 46:AF:91:81:F5:CA:65