SSL-Tools

SSL check results of mx2.contactoff.com

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Discover if the mail servers for mx2.contactoff.com 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

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Report created Mon, 14 Apr 2025 22:04:00 +0000

The mailservers of mx2.contactoff.com can be reached through a secure connection.

Servers

Incoming Mails

These servers are responsible for incoming mails to @mx2.contactoff.com addresses.

Hostname / IP address Priority STARTTLS Certificates Protocol
mx2.contactoff.com
134.0.116.123
 -
supported
mx2.contactoff.com
DANE
missing
PFS
supported
Heartbleed
not vulnerable
Weak ciphers
not found
  • TLSv1.2
  • SSLv3
13 s

Outgoing Mails

We have not received any emails from a @mx2.contactoff.com address so far. Test mail delivery

Certificates

First seen at:

CN=mx2.contactoff.com

Certificate chain
  • mx2.contactoff.com
    • remaining
    • 256 bit
    • ecdsa-with-SHA384
      • E6
        • remaining
        • 384 bit
        • sha256WithRSAEncryption
          • ISRG Root X1 (Certificate is self-signed.)
            • remaining
            • 4096 bit
            • sha256WithRSAEncryption
Subject
Common Name (CN)
  • mx2.contactoff.com
Alternative Names
  • mx2.contactoff.com
Issuer
Country (C)
  • US
Organization (O)
  • Let's Encrypt
Common Name (CN)
  • E6
validity period
Not valid before
2025-04-13
Not valid after
2025-07-12
This certifcate has been verified for the following usages:
  • Digital Signature
  • TLS Web Server Authentication
  • TLS Web Client Authentication
Fingerprints
SHA256
BA:FA:2E:1D:D9:52:CF:20:F4:AF:A2:DE:0C:54:39:DE:68:C7:02:8D:F9:33:0B:72:7A:0A:25:6F:A9:44:D0:22
SHA1
33:8A:4B:08:DC:C1:80:9A:2B:06:4A:B9:42:CD:FC:8E:6D:21:D7:2C
X509v3 extensions
subjectKeyIdentifier
  • 52:F0:F4:56:C2:7B:14:DC:E8:F8:3D:0E:5E:F9:C1:8C:BA:AB:24:C2
authorityKeyIdentifier
  • keyid:93:27:46:98:03:A9:51:68:8E:98:D6:C4:42:48:DB:23:BF:58:94:D2
authorityInfoAccess
  • OCSP - URI:http://e6.o.lencr.org
  • CA Issuers - URI:http://e6.i.lencr.org/
certificatePolicies
  • Policy: 2.23.140.1.2.1
crlDistributionPoints
  • Full Name:
  • URI:http://e6.c.lencr.org/14.crl
ct_precert_scts
  • Signed Certificate Timestamp:
  • Version : v1 (0x0)
  • Log ID : 0D:E1:F2:30:2B:D3:0D:C1:40:62:12:09:EA:55:2E:FC:
  • 47:74:7C:B1:D7:E9:30:EF:0E:42:1E:B4:7E:4E:AA:34
  • Timestamp : Apr 13 17:28:38.951 2025 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:46:02:21:00:A5:E6:41:8D:CA:45:B3:AA:1D:45:D3:
  • 53:93:73:8F:F7:28:32:32:D9:30:CD:0C:36:7E:94:76:
  • 02:5E:E4:BA:EF:02:21:00:99:87:EC:F0:06:3A:92:CA:
  • 7E:CA:DD:1B:E9:2A:02:20:58:6A:2D:7D:98:31:26:31:
  • 6F:D0:F4:D4:F9:DB:94:49
  • Signed Certificate Timestamp:
  • Version : v1 (0x0)
  • Log ID : CC:FB:0F:6A:85:71:09:65:FE:95:9B:53:CE:E9:B2:7C:
  • 22:E9:85:5C:0D:97:8D:B6:A9:7E:54:C0:FE:4C:0D:B0
  • Timestamp : Apr 13 17:28:38.975 2025 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:46:02:21:00:C6:74:D4:0D:67:79:3E:DA:9F:71:94:
  • 7E:13:7C:AC:A3:FD:8B:AA:B9:B0:A5:41:6D:FA:A1:DF:
  • 2A:64:B5:EC:D3:02:21:00:FB:16:43:88:88:41:E6:EF:
  • 2B:0E:B2:83:26:06:4A:BD:68:35:AE:C4:60:21:AC:6B:
  • 14:45:98:B5:9D:BE:7A:F5