SSL-Tools

SSL check results of klaas.eu

NEW You can also bulk check multiple servers.

Discover if the mail servers for klaas.eu 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, 08 Jan 2026 05:44:30 +0000

The mailservers of klaas.eu can be reached through a secure connection.

Servers

Incoming Mails

These servers are responsible for incoming mails to @klaas.eu addresses.

Hostname / IP address Priority STARTTLS Certificates Protocol
mail.junkie.de
2a03:4000:5b:785::dead:beaf
 10
supported
mail.junkie.de
DANE
missing
PFS
supported
Heartbleed
not vulnerable
Weak ciphers
not found
  • TLSv1.2
  • SSLv3
3 s
mail.junkie.de
202.61.205.114
 10
supported
mail.junkie.de
DANE
missing
PFS
supported
Heartbleed
not vulnerable
Weak ciphers
not found
  • TLSv1.2
  • SSLv3
3 s

Outgoing Mails

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

Certificates

First seen at:

CN=mail.junkie.de

Certificate chain
  • mail.junkie.de
    • 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)
  • mail.junkie.de
Alternative Names
  • imap.junkie.de
  • imap.klaas.eu
  • mail.junkie.de
  • mail.klaas.eu
  • smtp.junkie.de
  • smtp.klaas.eu
  • www.klaas.eu
Issuer
Country (C)
  • US
Organization (O)
  • Let's Encrypt
Common Name (CN)
  • E7
validity period
Not valid before
2025-12-09
Not valid after
2026-03-09
This certifcate has been verified for the following usages:
  • Digital Signature
  • TLS Web Server Authentication
  • TLS Web Client Authentication
Fingerprints
SHA256
5F:F0:FF:D1:A2:6C:90:DC:41:E5:E7:00:59:03:25:80:67:A4:35:2F:EA:27:29:E0:FB:79:84:C7:F5:80:F7:FD
SHA1
59:44:5D:23:2F:B4:17:8E:7D:43:D0:05:79:13:50:AB:CC:88:3C:B6
X509v3 extensions
subjectKeyIdentifier
  • 56:BD:FE:40:CB:2F:94:72:A6:60:21:EA:F7:85:F7:3E:68:F2:7C:DD
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/29.crl
ct_precert_scts
  • Signed Certificate Timestamp:
  • Version : v1 (0x0)
  • Log ID : 96:97:64:BF:55:58:97:AD:F7:43:87:68:37:08:42:77:
  • E9:F0:3A:D5:F6:A4:F3:36:6E:46:A4:3F:0F:CA:A9:C6
  • Timestamp : Dec 9 23:42:57.447 2025 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:45:02:20:0E:F2:A9:55:83:DB:36:EF:90:C4:DD:8D:
  • EA:3C:11:88:2C:16:23:E4:37:13:9B:4B:5D:C3:2D:D2:
  • FE:BB:E4:1D:02:21:00:DC:5E:6A:8E:A0:8E:47:CF:83:
  • ED:CA:FC:67:6A:D1:01:36:76:7B:F7:A4:E6:58:B1:F6:
  • A1:A0:BD:4D:36:23:1C
  • Signed Certificate Timestamp:
  • Version : v1 (0x0)
  • Log ID : D1:6E:A9:A5:68:07:7E:66:35:A0:3F:37:A5:DD:BC:03:
  • A5:3C:41:12:14:D4:88:18:F5:E9:31:B3:23:CB:95:04
  • Timestamp : Dec 9 23:42:57.591 2025 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:45:02:21:00:CD:A2:88:56:28:AC:E3:61:17:3E:07:
  • 5D:C3:5F:9B:56:17:9B:4A:0B:0E:FD:55:89:B4:EA:86:
  • 12:0D:FF:55:B9:02:20:6A:EF:2D:39:66:D4:B7:03:D7:
  • 67:00:C2:1C:9D:85:2C:B5:D6:25:74:FB:28:2C:74:BD:
  • 72:1D:5A:B4:8A:49:08