SSL-Tools

SSL check results of mail.testwunder.net

NEW You can also bulk check multiple servers.

Discover if the mail servers for mail.testwunder.net 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, 18 May 2026 00:31:03 +0000

The mailservers of mail.testwunder.net can be reached through a secure connection.

Servers

Incoming Mails

These servers are responsible for incoming mails to @mail.testwunder.net addresses.

Hostname / IP address Priority STARTTLS Certificates Protocol
mail.testwunder.net
82.165.240.175
 -
supported
testwunder.net
DANE
missing
PFS
supported
Heartbleed
not vulnerable
Weak ciphers
not found
  • TLSv1.2
  • SSLv3
1 s

Outgoing Mails

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

Certificates

First seen at:

CN=testwunder.net

Certificate chain
  • testwunder.net
    • remaining
    • 2048 bit
    • sha256WithRSAEncryption
      • R12
        • remaining
        • 2048 bit
        • sha256WithRSAEncryption
          • ISRG Root X1 (Certificate is self-signed.)
            • remaining
            • 4096 bit
            • sha256WithRSAEncryption
Subject
Common Name (CN)
  • testwunder.net
Alternative Names
  • mail.testwunder.net
  • testwunder.net
Issuer
Country (C)
  • US
Organization (O)
  • Let's Encrypt
Common Name (CN)
  • R12
validity period
Not valid before
2026-05-12
Not valid after
2026-08-10
This certifcate has been verified for the following usages:
  • Digital Signature
  • Key Encipherment
  • TLS Web Server Authentication
Fingerprints
SHA256
80:B7:70:52:1E:87:65:BF:06:54:E9:0E:F6:75:F9:B9:FF:EF:0C:5D:AD:E3:B9:CC:4A:6A:45:CE:D7:59:37:23
SHA1
F1:83:6A:89:0A:31:F6:D8:CC:94:FA:FA:39:1A:24:E7:7F:FC:39:66
X509v3 extensions
subjectKeyIdentifier
  • 87:2A:DD:47:1E:13:FB:3F:0D:B7:A7:53:63:1B:2E:CF:EC:72:9D:EB
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/81.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 12 18:56:10.397 2026 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:46:02:21:00:C5:CA:9C:A2:4F:DE:B2:A3:E1:78:0E:
  • B3:FF:1E:C2:03:83:73:3F:C3:3D:32:96:A9:D6:D0:99:
  • 83:71:3B:96:C9:02:21:00:90:A7:50:17:BC:B2:A4:45:
  • ED:50:EA:92:67:5E:B6:DB:C3:4C:3E:C1:B2:3E:67:E7:
  • 0D:02:9A:08:49:1B:56:5C
  • Signed Certificate Timestamp:
  • Version : v1 (0x0)
  • Log ID : 6C:FE:50:19:43:A8:5E:A9:16:BC:52:D1:33:E4:DC:C9:
  • 1E:F1:41:1C:7D:25:84:20:D1:73:80:9E:18:18:EB:3A
  • Timestamp : May 12 18:56:11.151 2026 GMT
  • Extensions: 00:00:05:00:0B:2F:5B:44
  • Signature : ecdsa-with-SHA256
  • 30:45:02:21:00:D3:E8:7A:52:E8:EA:AB:A1:0F:83:A7:
  • 93:CB:F0:09:91:BC:E5:2D:E4:B3:C9:EA:4C:66:60:0E:
  • 17:85:5F:CE:E1:02:20:5A:C2:63:A7:EC:88:C7:54:2D:
  • C1:81:4A:E9:D1:26:92:5D:2B:13:96:A6:E8:CB:F7:52:
  • 35:01:D0:DB:AA:5B:78