SSL-Tools

SSL check results of intrakon.de

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Discover if the mail servers for intrakon.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 Fri, 29 Aug 2025 19:42:43 +0000

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

Servers

Incoming Mails

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

Hostname / IP address Priority STARTTLS Certificates Protocol
smtp.intrakon.de
87.139.210.254
 10
supported
smtp.intrakon.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 @intrakon.de address so far. Test mail delivery

Certificates

First seen at:

CN=smtp.intrakon.de

Certificate chain
  • smtp.intrakon.de
    • remaining
    • 2048 bit
    • sha256WithRSAEncryption
      • R12
        • remaining
        • 2048 bit
        • sha256WithRSAEncryption
          • ISRG Root X1 (Certificate is self-signed.)
            • remaining
            • 4096 bit
            • sha256WithRSAEncryption
Subject
Common Name (CN)
  • smtp.intrakon.de
Alternative Names
  • smtp.intrakon.de
Issuer
Country (C)
  • US
Organization (O)
  • Let's Encrypt
Common Name (CN)
  • R12
validity period
Not valid before
2025-08-22
Not valid after
2025-11-20
This certifcate has been verified for the following usages:
  • Digital Signature
  • Key Encipherment
  • TLS Web Server Authentication
  • TLS Web Client Authentication
Fingerprints
SHA256
B5:67:22:36:A4:2D:E9:0C:C7:D4:5F:D8:CE:11:F3:59:A3:04:10:F9:16:CB:52:91:E0:63:7A:1D:20:89:5B:99
SHA1
3D:41:8D:B4:A1:BD:C6:DB:10:0E:DD:06:7C:5E:5D:32:AB:E4:53:97
X509v3 extensions
subjectKeyIdentifier
  • C7:45:15:14:A8:00:25:78:C6:89:E6:F2:10:AE:28:27:C8:38:E4:F9
authorityKeyIdentifier
  • keyid:00:B5:29:F2:2D:8E:6F:31:E8:9B:4C:AD:78:3E:FA:DC:E9:0C:D1:D2
authorityInfoAccess
  • CA Issuers - URI:http://r12.i.lencr.org/
certificatePolicies
  • Policy: 2.23.140.1.2.1
crlDistributionPoints
  • Full Name:
  • URI:http://r12.c.lencr.org/15.crl
ct_precert_scts
  • Signed Certificate Timestamp:
  • Version : v1 (0x0)
  • Log ID : A4:42:C5:06:49:60:61:54:8F:0F:D4:EA:9C:FB:7A:2D:
  • 26:45:4D:87:A9:7F:2F:DF:45:59:F6:27:4F:3A:84:54
  • Timestamp : Aug 22 07:06:16.957 2025 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:46:02:21:00:CE:D7:D1:10:07:06:DD:4E:8C:91:D3:
  • 50:62:ED:B9:5E:35:F7:2B:42:4D:C8:94:AC:4D:C1:5C:
  • E2:77:9C:DD:22:02:21:00:B7:03:7F:71:9F:CA:10:31:
  • 76:EC:6C:E9:C6:63:59:58:0E:D6:6A:3A:79:88:69:8A:
  • 98:1A:48:0E:E7:45:1A:79
  • 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 : Aug 22 07:06:16.959 2025 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:46:02:21:00:B5:EC:0C:98:8F:ED:34:DC:90:EB:B2:
  • E8:1D:88:0A:87:BB:E4:F2:81:17:F3:9F:F5:5E:56:2B:
  • 85:23:7C:75:6A:02:21:00:A2:9A:7E:44:2D:FE:92:76:
  • ED:64:DC:1F:FC:AE:16:9E:B4:F8:80:C3:19:77:8C:A2:
  • BE:62:A8:50:9F:62:A8:D7