SSL-Tools

SSL check results of tb.pro

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Discover if the mail servers for tb.pro 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 Sat, 26 Jul 2025 00:30:07 +0000

The mailservers of tb.pro can be reached through a secure connection.

Servers

Incoming Mails

These servers are responsible for incoming mails to @tb.pro addresses.

Hostname / IP address Priority STARTTLS Certificates Protocol
mail.tb.pro
52.0.215.75
 10
supported
mail.tb.pro
DANE
missing
PFS
supported
Heartbleed
not vulnerable
Weak ciphers
not found
  • TLSv1.2
  • SSLv3
5 s

Outgoing Mails

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

Certificates

First seen at:

CN=mail.tb.pro

Certificate chain
  • mail.tb.pro
    • 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)
  • mail.tb.pro
Alternative Names
  • autoconfig.tb.pro
  • autodiscover.tb.pro
  • mail.tb.pro
Issuer
Country (C)
  • US
Organization (O)
  • Let's Encrypt
Common Name (CN)
  • E6
validity period
Not valid before
2025-07-16
Not valid after
2025-10-14
This certifcate has been verified for the following usages:
  • Digital Signature
  • TLS Web Server Authentication
  • TLS Web Client Authentication
Fingerprints
SHA256
5B:88:2D:41:65:EA:FA:02:1A:D2:E3:08:2F:07:48:A3:25:14:97:4D:7F:70:5F:E9:E7:AB:F3:52:8A:B3:3E:2B
SHA1
D6:DE:E0:62:29:19:19:53:57:E0:2B:24:07:A6:D0:9F:BA:17:AA:74
X509v3 extensions
subjectKeyIdentifier
  • CC:88:EE:E5:D1:C3:94:B1:50:C2:89:CA:39:82:88:83:E9:BE:FC:22
authorityKeyIdentifier
  • keyid:93:27:46:98:03:A9:51:68:8E:98:D6:C4:42:48:DB:23:BF:58:94:D2
authorityInfoAccess
  • 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/38.crl
ct_precert_scts
  • Signed Certificate Timestamp:
  • Version : v1 (0x0)
  • Log ID : A4:42:C5:06:49:60:61:54:8F:0F:D4:EA:9C:FB:7A:2D:
  • 26:45:4D:87:A9:7F:2F:DF:45:59:F6:27:4F:3A:84:54
  • Timestamp : Jul 16 13:04:16.308 2025 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:45:02:21:00:A1:37:7A:A4:97:72:96:D3:F3:4B:56:
  • 5F:91:D3:1A:DA:8D:E4:95:F8:7E:B2:EA:26:BA:C8:EB:
  • 0D:A5:29:F6:20:02:20:7F:6C:83:6A:E5:57:1D:51:0E:
  • 0E:BE:B6:E9:78:95:85:A2:22:B0:43:15:FB:10:15:C1:
  • 45:8C:7B:6A:06:32:85
  • 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 : Jul 16 13:04:16.306 2025 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:46:02:21:00:A7:19:81:61:8A:CD:BB:7E:50:25:2E:
  • 1A:F2:9C:C4:54:4F:0B:4C:D7:8D:3B:78:9B:73:2C:46:
  • 38:10:85:6D:64:02:21:00:AB:D8:70:29:F9:70:01:63:
  • 5E:7D:5C:DB:DB:6B:BD:9D:81:1D:BE:6C:E2:9D:BF:BD:
  • F9:3B:87:B2:3C:4D:5D:03