SSL-Tools

SSL check results of cssf.lu

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Discover if the mail servers for cssf.lu 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, 31 Aug 2026 16:24:32 +0000

We can not guarantee a secure connection to the mailservers of cssf.lu!

Please contact the operator of cssf.lu and ask him or her to solve this problem. This result stays accessible under the following address:

/mailservers/cssf.lu

Servers

Incoming Mails

These servers are responsible for incoming mails to @cssf.lu addresses.

Hostname / IP address Priority STARTTLS Certificates Protocol
mail.cssf.lu
146.0.177.233
 10
supported
mail.cssf.lu
DANE
missing
PFS
supported
Heartbleed
not vulnerable
Weak ciphers
not found
  • TLSv1.2
  • SSLv3
2 s
mail.cssf.lu
212.66.76.41
Results incomplete
10
unsupported
not checked
DANE
missing
PFS
not checked
Heartbleed
not checked
Weak ciphers
not checked
1 s

Outgoing Mails

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

Certificates

First seen at:

CN=mail.cssf.lu

Certificate chain
Subject
Common Name (CN)
  • mail.cssf.lu
Alternative Names
  • mail.cssf.lu
  • www.mail.cssf.lu
Issuer
Country (C)
  • US
Organization (O)
  • DigiCert Inc
Organizational Unit (OU)
  • www.digicert.com
Common Name (CN)
  • RapidSSL TLS RSA CA G1
validity period
Not valid before
2025-09-01
Not valid after
2026-10-02
This certifcate has been verified for the following usages:
  • Digital Signature
  • Key Encipherment
  • TLS Web Server Authentication
  • TLS Web Client Authentication
Fingerprints
SHA256
73:36:70:F8:38:5A:14:F5:63:28:72:A0:8B:F1:06:6B:AE:77:B9:95:A7:62:18:3F:91:0B:62:3D:25:56:B3:C2
SHA1
60:76:75:54:B8:F1:50:FC:A7:66:33:D1:BC:C4:04:8E:43:82:8E:BD
X509v3 extensions
authorityKeyIdentifier
  • keyid:0C:DB:6C:82:49:0F:4A:67:0A:B8:14:EE:7A:C4:48:52:88:EB:56:38
subjectKeyIdentifier
  • 38:97:22:CE:30:E6:F3:AC:74:DD:CF:A0:58:AC:63:CF:C3:43:32:89
certificatePolicies
  • Policy: 2.23.140.1.2.1
  • CPS: http://www.digicert.com/CPS
crlDistributionPoints
  • Full Name:
  • URI:http://cdp.rapidssl.com/RapidSSLTLSRSACAG1.crl
authorityInfoAccess
  • OCSP - URI:http://status.rapidssl.com
  • CA Issuers - URI:http://cacerts.rapidssl.com/RapidSSLTLSRSACAG1.crt
ct_precert_scts
  • Signed Certificate Timestamp:
  • Version : v1 (0x0)
  • Log ID : D7:6D:7D:10:D1:A7:F5:77:C2:C7:E9:5F:D7:00:BF:F9:
  • 82:C9:33:5A:65:E1:D0:B3:01:73:17:C0:C8:C5:69:77
  • Timestamp : Sep 1 07:30:13.780 2025 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:45:02:21:00:DC:83:75:F8:8E:90:AD:C3:96:AA:EE:
  • 8D:14:30:3B:7E:95:FB:51:E5:51:20:FB:9A:90:CC:93:
  • FB:C5:49:C5:D2:02:20:05:21:3F:73:B2:4F:7B:BD:44:
  • F9:8A:33:0E:72:B8:D3:0B:ED:CE:2A:98:A8:E7:AD:B9:
  • 91:26:18:46:9A:FA:3F
  • Signed Certificate Timestamp:
  • Version : v1 (0x0)
  • Log ID : C2:31:7E:57:45:19:A3:45:EE:7F:38:DE:B2:90:41:EB:
  • C7:C2:21:5A:22:BF:7F:D5:B5:AD:76:9A:D9:0E:52:CD
  • Timestamp : Sep 1 07:30:13.816 2025 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:45:02:20:70:5C:8D:C6:E3:7B:58:30:DA:C5:2C:44:
  • AD:E7:24:36:8F:C1:9A:0F:ED:FA:28:A4:E4:32:F2:54:
  • 1D:34:54:DD:02:21:00:98:DC:87:19:D4:68:1B:6B:5D:
  • A8:FA:0E:A8:1D:9C:F4:C1:DB:A9:47:88:B9:5E:FF:CA:
  • AB:A5:2D:A1:1F:29:96
  • Signed Certificate Timestamp:
  • Version : v1 (0x0)
  • Log ID : 94:4E:43:87:FA:EC:C1:EF:81:F3:19:24:26:A8:18:65:
  • 01:C7:D3:5F:38:02:01:3F:72:67:7D:55:37:2E:19:D8
  • Timestamp : Sep 1 07:30:13.829 2025 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:45:02:21:00:E2:B7:32:76:78:8D:E9:A2:99:A8:73:
  • 32:7F:88:DB:7A:53:D1:76:03:58:99:C4:E8:15:DE:6A:
  • D2:5B:1D:F4:44:02:20:54:01:0B:AA:EF:AD:0E:DD:22:
  • B2:8B:75:81:BC:01:E0:75:F7:6E:57:95:1F:92:AD:F2:
  • B7:96:10:43:9F:9B:33