SSL-Tools

SSL check results of zelx.de

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Discover if the mail servers for zelx.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 Thu, 10 Apr 2025 05:40:48 +0000

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

Servers

Incoming Mails

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

Hostname / IP address Priority STARTTLS Certificates Protocol
zelx.de
2a01:238:4203:5300:b5b5:7023:a56d:1b33
 20
supported
zelx.de
DANE
missing
PFS
supported
Heartbleed
not vulnerable
Weak ciphers
not found
  • TLSv1.2
  • SSLv3
2 s
zelx.de
81.169.137.219
 20
supported
zelx.de
DANE
missing
PFS
supported
Heartbleed
not vulnerable
Weak ciphers
not found
  • TLSv1.2
  • SSLv3
2 s

Outgoing Mails

We have received emails from these servers with @zelx.de sender addresses. Test mail delivery

Host TLS Version & Cipher
server.zelx.de (81.169.137.219)
TLSv1.3 TLS_AES_256_GCM_SHA384
server.zelx.de (81.169.200.227)
TLSv1.2 ECDHE-RSA-AES256-GCM-SHA384

Certificates

First seen at:

CN=zelx.de

Certificate chain
Subject
Common Name (CN)
  • zelx.de
Alternative Names
  • zelx.de
  • www.zelx.de
Issuer
Country (C)
  • US
Organization (O)
  • DigiCert Inc
Organizational Unit (OU)
  • www.digicert.com
Common Name (CN)
  • Encryption Everywhere DV TLS CA - G2
validity period
Not valid before
2025-04-08
Not valid after
2025-07-15
This certifcate has been verified for the following usages:
  • Digital Signature
  • Key Encipherment
  • TLS Web Server Authentication
  • TLS Web Client Authentication
Fingerprints
SHA256
71:7A:8B:42:6B:DD:88:88:CD:A4:A4:B2:F9:91:D7:18:3B:D9:B0:DA:7A:D9:06:03:BF:00:D9:29:89:D1:20:58
SHA1
ED:95:7F:F7:57:11:E3:CD:21:06:B1:69:93:CC:32:F1:82:F2:71:5F
X509v3 extensions
authorityKeyIdentifier
  • keyid:78:DF:91:90:5F:EE:DE:AC:F6:C5:75:EB:D5:4C:55:53:EF:24:4A:B6
subjectKeyIdentifier
  • FB:D2:16:4B:7C:08:11:49:55:82:4A:A3:C5:E1:34:AB:3D:E1:90:C2
certificatePolicies
  • Policy: 2.23.140.1.2.1
  • CPS: http://www.digicert.com/CPS
authorityInfoAccess
  • OCSP - URI:http://ocsp.digicert.com
  • CA Issuers - URI:http://cacerts.digicert.com/EncryptionEverywhereDVTLSCA-G2.crt
ct_precert_scts
  • Signed Certificate Timestamp:
  • Version : v1 (0x0)
  • Log ID : 12:F1:4E:34:BD:53:72:4C:84:06:19:C3:8F:3F:7A:13:
  • F8:E7:B5:62:87:88:9C:6D:30:05:84:EB:E5:86:26:3A
  • Timestamp : Apr 8 06:36:36.779 2025 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:45:02:21:00:97:B1:AF:D9:EB:60:61:11:50:BB:60:
  • B5:D0:56:BF:5A:36:D3:24:BF:0A:A9:DD:88:16:D0:8C:
  • 9D:13:B2:0E:3C:02:20:10:A7:73:81:62:EE:92:B9:85:
  • 01:8D:2C:3C:DD:D4:BA:DE:CA:34:E4:B8:78:E8:13:1C:
  • 19:91:C1:F9:7C:E3:A1
  • 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 : Apr 8 06:36:36.836 2025 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:44:02:20:1D:CF:10:50:51:50:7A:F0:7A:9E:D4:0C:
  • 83:83:C7:59:B2:28:1A:06:13:73:2B:51:9C:42:C0:A0:
  • 20:83:70:E3:02:20:04:BF:F1:DF:62:95:EC:1A:54:2C:
  • 16:8A:08:61:E9:D5:17:26:E9:78:F1:13:2C:3C:D4:68:
  • D5:CB:84:22:BF:22
  • Signed Certificate Timestamp:
  • Version : v1 (0x0)
  • Log ID : DD:DC:CA:34:95:D7:E1:16:05:E7:95:32:FA:C7:9F:F8:
  • 3D:1C:50:DF:DB:00:3A:14:12:76:0A:2C:AC:BB:C8:2A
  • Timestamp : Apr 8 06:36:36.855 2025 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:44:02:20:75:26:02:ED:04:7B:3A:DD:A2:B9:CB:01:
  • 2D:EE:5F:7C:74:CF:D3:B5:0B:D5:8B:63:7E:B5:94:A3:
  • C4:07:F1:96:02:20:51:3D:AE:8D:D5:00:98:40:8D:09:
  • E9:ED:B4:80:73:E8:15:0C:C2:3D:D1:26:E6:E1:2D:70:
  • DC:BA:F1:B0:0B:30