SSL-Tools

SSL check results of srv.kadotec.de

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Discover if the mail servers for srv.kadotec.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 Mon, 04 Aug 2025 00:30:30 +0000

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

Servers

Incoming Mails

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

Hostname / IP address Priority STARTTLS Certificates Protocol
srv.kadotec.de
75.119.156.100
 -
supported
srv.kadotec.de
DANE
missing
PFS
supported
Heartbleed
not vulnerable
Weak ciphers
not found
  • TLSv1.2
  • TLSv1.1
  • TLSv1.0
  • SSLv3
2 s

Outgoing Mails

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

Certificates

First seen at:

CN=srv.kadotec.de

Certificate chain
  • srv.kadotec.de
    • remaining
    • 2048 bit
    • sha256WithRSAEncryption
      • R10
        • remaining
        • 2048 bit
        • sha256WithRSAEncryption
          • ISRG Root X1 (Certificate is self-signed.)
            • remaining
            • 4096 bit
            • sha256WithRSAEncryption
Subject
Common Name (CN)
  • srv.kadotec.de
Alternative Names
  • srv.kadotec.de
Issuer
Country (C)
  • US
Organization (O)
  • Let's Encrypt
Common Name (CN)
  • R10
validity period
Not valid before
2025-08-01
Not valid after
2025-10-30
This certifcate has been verified for the following usages:
  • Digital Signature
  • Key Encipherment
  • TLS Web Server Authentication
  • TLS Web Client Authentication
Fingerprints
SHA256
89:3B:64:29:C8:03:7D:7D:E5:E3:C4:7E:46:2C:37:C9:7F:36:69:BC:C9:C4:17:0A:72:E0:6B:07:92:DC:E3:70
SHA1
16:C3:8E:E3:95:64:D2:F4:14:73:B1:68:B0:ED:B3:4C:4A:EC:52:19
X509v3 extensions
subjectKeyIdentifier
  • 76:76:90:5D:5F:41:45:3E:49:65:42:72:36:10:14:64:CF:8D:21:19
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/36.crl
ct_precert_scts
  • Signed Certificate Timestamp:
  • Version : v1 (0x0)
  • Log ID : 1A:04:FF:49:D0:54:1D:40:AF:F6:A0:C3:BF:F1:D8:C4:
  • 67:2F:4E:EC:EE:23:40:68:98:6B:17:40:2E:DC:89:7D
  • Timestamp : Aug 1 16:05:09.069 2025 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:44:02:20:28:96:5C:D2:36:6F:7A:FC:08:5C:96:71:
  • 08:01:03:48:35:E6:3B:31:FE:14:7B:14:B7:99:8E:86:
  • BA:BD:07:4A:02:20:4B:4D:B6:24:D3:58:96:73:EE:DB:
  • B9:DD:6C:35:47:5F:FD:FD:3B:8C:BE:32:44:D3:11:5A:
  • 97:35:73:EA:23:F2
  • 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 1 16:05:09.020 2025 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:44:02:20:7E:E9:22:CA:F0:0D:0E:71:B6:6A:E8:35:
  • 4F:E9:5F:41:F9:A0:F1:D6:86:58:EB:D2:0A:DA:46:CC:
  • 76:71:7A:2E:02:20:1D:4F:8F:A5:BF:CC:08:3B:52:68:
  • 29:EE:1E:A3:F0:A0:89:A4:CE:97:89:26:F4:04:1A:D7:
  • 26:45:CF:45:DF:CC