SSL-Tools

SSL check results of duck.industries

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Discover if the mail servers for duck.industries 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 Wed, 06 May 2026 11:05:34 +0000

The mailservers of duck.industries can be reached through a secure connection.

Servers

Incoming Mails

These servers are responsible for incoming mails to @duck.industries addresses.

Hostname / IP address Priority STARTTLS Certificates Protocol
duck.industries
87.138.150.40
 10
supported
duck.industries
DANE
missing
PFS
supported
Heartbleed
not vulnerable
Weak ciphers
not found
  • TLSv1.2
  • SSLv3
2 s

Outgoing Mails

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

Certificates

First seen at:

CN=duck.industries

Certificate chain
  • duck.industries
    • remaining
    • 256 bit
    • ecdsa-with-SHA384
      • E8
        • remaining
        • 384 bit
        • sha256WithRSAEncryption
          • ISRG Root X1 (Certificate is self-signed.)
            • remaining
            • 4096 bit
            • sha256WithRSAEncryption
Subject
Common Name (CN)
  • duck.industries
Alternative Names
  • duck.industries
Issuer
Country (C)
  • US
Organization (O)
  • Let's Encrypt
Common Name (CN)
  • E8
validity period
Not valid before
2026-05-05
Not valid after
2026-08-03
This certifcate has been verified for the following usages:
  • Digital Signature
  • TLS Web Server Authentication
Fingerprints
SHA256
AB:E6:36:D8:DF:6E:60:2F:50:24:0C:6C:C5:F7:3C:A2:B7:FF:85:0A:C0:1D:D9:39:72:DB:98:02:D2:46:5E:E3
SHA1
A4:9B:32:A4:07:36:83:AD:2D:60:48:32:BC:77:73:69:55:26:BA:E6
X509v3 extensions
subjectKeyIdentifier
  • 73:83:9F:F3:83:DE:BB:78:E8:89:13:47:F4:03:95:49:08:10:FD:5B
authorityKeyIdentifier
  • keyid:8F:0D:13:A2:F6:2E:7E:D1:50:6C:33:18:38:5D:59:8E:23:72:91:CA
authorityInfoAccess
  • CA Issuers - URI:http://e8.i.lencr.org/
certificatePolicies
  • Policy: 2.23.140.1.2.1
crlDistributionPoints
  • Full Name:
  • URI:http://e8.c.lencr.org/13.crl
ct_precert_scts
  • Signed Certificate Timestamp:
  • Version : v1 (0x0)
  • Log ID : CB:38:F7:15:89:7C:84:A1:44:5F:5B:C1:DD:FB:C9:6E:
  • F2:9A:59:CD:47:0A:69:05:85:B0:CB:14:C3:14:58:E7
  • Timestamp : May 5 21:35:24.215 2026 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:45:02:20:4F:3C:2C:C6:EB:C8:33:5B:B2:B7:55:28:
  • 9E:40:01:3A:17:72:92:CD:FA:75:4B:5D:00:32:30:4E:
  • E5:AB:CE:B4:02:21:00:F2:3F:B1:DA:1F:42:59:FD:1E:
  • 96:01:C5:4F:4C:57:97:DC:E6:0B:4A:93:C9:0A:F1:7A:
  • B5:65:11:CD:17:37:7F
  • Signed Certificate Timestamp:
  • Version : v1 (0x0)
  • Log ID : A8:26:CB:E3:0A:C6:35:12:46:53:3F:E0:65:F1:4F:19:
  • D9:6E:19:08:13:C4:1D:D9:6D:79:00:B3:12:3C:55:27
  • Timestamp : May 5 21:35:24.498 2026 GMT
  • Extensions: 00:00:05:00:09:B0:9E:B4
  • Signature : ecdsa-with-SHA256
  • 30:45:02:21:00:FB:28:88:81:71:56:2C:43:4B:1B:1B:
  • 33:3E:A4:96:DC:00:97:17:E9:5D:8D:CC:50:24:15:D5:
  • 6B:59:B8:45:5B:02:20:5B:E9:72:BB:66:2A:2B:32:66:
  • E0:72:D6:EF:3C:3C:59:37:3D:A6:6D:15:5E:16:36:91:
  • C4:30:C9:0B:0C:F1:1A