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SSL check results of server.czw.wien

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Discover if the mail servers for server.czw.wien 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, 30 Oct 2025 01:30:11 +0000

The mailservers of server.czw.wien can be reached through a secure connection.

Servers

Incoming Mails

These servers are responsible for incoming mails to @server.czw.wien addresses.

Hostname / IP address Priority STARTTLS Certificates Protocol
server.czw.wien
212.53.165.82
 -
supported
server.czw.wien
DANE
missing
PFS
supported
Heartbleed
not vulnerable
Weak ciphers
not found
  • TLSv1.2
  • TLSv1.1
  • TLSv1.0
  • SSLv3
1 s

Outgoing Mails

We have not received any emails from a @server.czw.wien address so far. Test mail delivery

Certificates

First seen at:

CN=server.czw.wien

Certificate chain
  • server.czw.wien
    • remaining
    • 2048 bit
    • sha256WithRSAEncryption
      • R12
        • remaining
        • 2048 bit
        • sha256WithRSAEncryption
          • ISRG Root X1 (Certificate is self-signed.)
            • remaining
            • 4096 bit
            • sha256WithRSAEncryption
Subject
Common Name (CN)
  • server.czw.wien
Alternative Names
  • server.czw.wien
Issuer
Country (C)
  • US
Organization (O)
  • Let's Encrypt
Common Name (CN)
  • R12
validity period
Not valid before
2025-09-04
Not valid after
2025-12-03
This certifcate has been verified for the following usages:
  • Digital Signature
  • Key Encipherment
  • TLS Web Server Authentication
  • TLS Web Client Authentication
Fingerprints
SHA256
99:60:BB:27:BF:52:20:B2:14:42:9B:20:37:BE:92:32:BA:F0:0A:78:AA:7E:16:19:5C:91:79:DE:80:C6:F3:AE
SHA1
E3:A5:25:8E:A3:12:7E:A7:E3:19:DA:1E:00:C2:13:B6:ED:9B:09:37
X509v3 extensions
subjectKeyIdentifier
  • 91:67:01:E9:67:AF:16:9C:4B:1D:F8:72:FC:D6:51:F3:71:1D:E9:7E
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/101.crl
ct_precert_scts
  • 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 : Sep 4 22:15:11.573 2025 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:46:02:21:00:89:B2:3A:AD:40:DA:FE:7D:D7:EE:9E:
  • C3:5B:64:81:8E:6D:6B:9C:AD:8E:F8:85:F8:D6:8D:3B:
  • C9:09:D7:09:FA:02:21:00:E0:D8:D1:31:05:51:4A:4A:
  • 9F:66:15:B5:43:49:DA:35:A8:95:63:E3:D6:29:09:A4:
  • 19:9B:78:BA:59:C3:E4:13
  • 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 : Sep 4 22:15:13.679 2025 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:45:02:20:2E:AB:67:EA:47:63:33:7C:F2:C0:3D:40:
  • 71:CF:91:99:D9:9D:38:37:91:6E:9D:D5:96:C2:24:AE:
  • EB:26:31:EC:02:21:00:BA:4B:72:A0:50:D8:E0:EB:7E:
  • FF:3E:C3:00:3A:61:F5:2A:34:9F:79:FE:8C:57:A9:EC:
  • 23:4D:1E:E4:AD:DD:04