SSL-Tools

SSL check results of server.teplofdl.cz

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Discover if the mail servers for server.teplofdl.cz 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 Mar 2024 08:59:43 +0000

The mailservers of server.teplofdl.cz can be reached through a secure connection.

Servers

Incoming Mails

These servers are responsible for incoming mails to @server.teplofdl.cz addresses.

Hostname / IP address Priority STARTTLS Certificates Protocol
server.teplofdl.cz
185.247.28.36
 -
supported
server.teplofdl.cz
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 @server.teplofdl.cz address so far. Test mail delivery

Certificates

First seen at:

CN=server.teplofdl.cz

Certificate chain
  • server.teplofdl.cz
    • remaining
    • 4096 bit
    • sha256WithRSAEncryption
      • R3
        • remaining
        • 2048 bit
        • sha256WithRSAEncryption
          • ISRG Root X1 (Certificate is self-signed.)
            • remaining
            • 4096 bit
            • sha256WithRSAEncryption
Subject
Common Name (CN)
  • server.teplofdl.cz
Alternative Names
  • server.teplofdl.cz
Issuer
Country (C)
  • US
Organization (O)
  • Let's Encrypt
Common Name (CN)
  • R3
validity period
Not valid before
2024-03-26
Not valid after
2024-06-24
This certifcate has been verified for the following usages:
  • Digital Signature
  • Key Encipherment
  • TLS Web Server Authentication
  • TLS Web Client Authentication
Fingerprints
SHA256
A1:DB:1F:44:4B:FC:62:F5:D4:03:38:AD:21:32:C8:62:63:22:AF:BD:75:5F:EF:F3:48:85:F9:52:AD:36:10:CB
SHA1
D0:0F:91:92:1C:4C:50:25:3C:5C:37:92:65:4E:F1:E6:AA:87:A3:3D
X509v3 extensions
subjectKeyIdentifier
  • CE:E8:D2:53:3B:23:E2:EF:AA:14:4B:06:67:3E:F6:43:55:92:55:D2
authorityKeyIdentifier
  • keyid:14:2E:B3:17:B7:58:56:CB:AE:50:09:40:E6:1F:AF:9D:8B:14:C2:C6
authorityInfoAccess
  • OCSP - URI:http://r3.o.lencr.org
  • CA Issuers - URI:http://r3.i.lencr.org/
certificatePolicies
  • Policy: 2.23.140.1.2.1
ct_precert_scts
  • Signed Certificate Timestamp:
  • Version : v1 (0x0)
  • Log ID : 48:B0:E3:6B:DA:A6:47:34:0F:E5:6A:02:FA:9D:30:EB:
  • 1C:52:01:CB:56:DD:2C:81:D9:BB:BF:AB:39:D8:84:73
  • Timestamp : Mar 26 10:33:31.177 2024 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:44:02:20:72:EF:45:4C:15:84:36:AF:91:A9:C3:12:
  • 58:DE:AA:E2:D8:D5:3F:8E:D5:4E:CB:C4:2B:97:88:4C:
  • 39:54:7A:2D:02:20:3B:44:00:E3:93:66:5B:74:B9:04:
  • 83:01:F9:58:1B:77:81:68:36:BD:69:0D:07:7D:DE:72:
  • A0:25:DC:E6:F0:A9
  • Signed Certificate Timestamp:
  • Version : v1 (0x0)
  • Log ID : 3B:53:77:75:3E:2D:B9:80:4E:8B:30:5B:06:FE:40:3B:
  • 67:D8:4F:C3:F4:C7:BD:00:0D:2D:72:6F:E1:FA:D4:17
  • Timestamp : Mar 26 10:33:31.187 2024 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:45:02:20:66:E8:83:52:C4:1D:22:B6:ED:93:4E:33:
  • 51:3D:A7:69:1B:BE:BC:69:D4:8F:C1:56:04:C1:E3:BC:
  • 0B:A4:29:CA:02:21:00:D4:FB:B6:CF:DC:0E:D7:B4:74:
  • 8E:B6:7D:04:5B:52:0D:72:6D:4A:8E:2D:40:75:A2:95:
  • 1B:48:94:0B:15:B6:E9