SSL-Tools

SSL check results of mail.kleij.de

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Discover if the mail servers for mail.kleij.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 Sat, 10 May 2025 14:07:35 +0000

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

Servers

Incoming Mails

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

Hostname / IP address Priority STARTTLS Certificates Protocol
mail.kleij.de
184.168.64.80
 -
supported
mail.kleij.de
DANE
missing
PFS
supported
Heartbleed
not vulnerable
Weak ciphers
not found
  • TLSv1.2
  • SSLv3
14 s

Outgoing Mails

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

Certificates

First seen at:

CN=mail.kleij.de

Certificate chain
  • mail.kleij.de
    • remaining
    • 4096 bit
    • sha256WithRSAEncryption
      • R10
        • remaining
        • 2048 bit
        • sha256WithRSAEncryption
          • ISRG Root X1 (Certificate is self-signed.)
            • remaining
            • 4096 bit
            • sha256WithRSAEncryption
Subject
Common Name (CN)
  • mail.kleij.de
Alternative Names
  • autoconfig.kleij.de
  • autodiscover.kleij.de
  • mail.kleij.de
Issuer
Country (C)
  • US
Organization (O)
  • Let's Encrypt
Common Name (CN)
  • R10
validity period
Not valid before
2025-05-09
Not valid after
2025-08-07
This certifcate has been verified for the following usages:
  • Digital Signature
  • Key Encipherment
  • TLS Web Server Authentication
  • TLS Web Client Authentication
Fingerprints
SHA256
20:A6:4D:8D:C0:DE:2F:05:AA:E9:B3:4E:48:94:8F:C5:FA:B2:4C:7D:C8:91:5A:7F:0A:49:E2:13:88:2F:8A:78
SHA1
91:A5:43:AD:AC:B5:07:A7:55:BF:7A:62:16:30:13:28:0C:C5:1D:8E
X509v3 extensions
subjectKeyIdentifier
  • A1:85:18:D6:43:39:AE:FD:8F:54:24:BA:A5:D9:B1:A3:F1:B7:1A:D5
authorityKeyIdentifier
  • keyid:BB:BC:C3:47:A5:E4:BC:A9:C6:C3:A4:72:0C:10:8D:A2:35:E1:C8:E8
authorityInfoAccess
  • CA Issuers - URI:http://r10.i.lencr.org/
certificatePolicies
  • Policy: 2.23.140.1.2.1
crlDistributionPoints
  • Full Name:
  • URI:http://r10.c.lencr.org/29.crl
ct_precert_scts
  • Signed Certificate Timestamp:
  • Version : v1 (0x0)
  • Log ID : ED:3C:4B:D6:E8:06:C2:A4:A2:00:57:DB:CB:24:E2:38:
  • 01:DF:51:2F:ED:C4:86:C5:70:0F:20:DD:B7:3E:3F:E0
  • Timestamp : May 9 07:32:44.786 2025 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:44:02:20:37:63:DB:0B:D7:F7:33:5E:81:7D:26:39:
  • C2:FA:6A:2E:EC:4B:31:CA:E1:71:E0:6B:F4:3E:95:D5:
  • 28:CD:3E:4D:02:20:17:D4:D3:2A:37:39:A9:38:AF:1F:
  • 49:8B:36:F4:E5:CB:0A:10:7D:6D:F0:16:B2:DA:DE:9C:
  • 42:6B:D6:0F:86:AB
  • Signed Certificate Timestamp:
  • Version : v1 (0x0)
  • Log ID : 0D:E1:F2:30:2B:D3:0D:C1:40:62:12:09:EA:55:2E:FC:
  • 47:74:7C:B1:D7:E9:30:EF:0E:42:1E:B4:7E:4E:AA:34
  • Timestamp : May 9 07:32:48.787 2025 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:45:02:20:58:85:67:A7:E2:C7:0C:80:69:3E:23:37:
  • C3:34:12:E0:37:6D:3F:44:C4:00:6E:6C:94:FC:01:EB:
  • BE:3C:97:A6:02:21:00:E2:72:50:A2:1D:8B:3C:28:AC:
  • F1:BF:66:F6:5B:3F:4F:49:B1:70:2D:2B:0A:18:C1:35:
  • D9:9B:94:F3:B9:3D:0F