SSL-Tools

SSL check results of gomtuu.net

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Discover if the mail servers for gomtuu.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 Wed, 27 May 2026 16:12:03 +0000

We can not guarantee a secure connection to the mailservers of gomtuu.net!

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

/mailservers/gomtuu.net

Servers

Incoming Mails

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

Hostname / IP address Priority STARTTLS Certificates Protocol
baryon.gomtuu.net
85.149.20.222
 10
supported
smtp.gomtuu.net
DANE
missing
PFS
supported
Heartbleed
not vulnerable
Weak ciphers
not found
  • TLSv1.2
  • SSLv3
2 s
unimatrix.gomtuu.net
77.168.71.170
Results incomplete
20
unsupported
not checked
DANE
missing
PFS
not checked
Heartbleed
not checked
Weak ciphers
not checked
4 s

Outgoing Mails

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

Certificates

First seen at:

CN=smtp.gomtuu.net

Certificate chain
  • smtp.gomtuu.net
    • remaining
    • 2048 bit
    • sha256WithRSAEncryption
    • Hostname Mismatch
    • Unknown Authority
      R12
Subject
Common Name (CN)
  • smtp.gomtuu.net
Alternative Names
  • smtp.gomtuu.net
Issuer
Country (C)
  • US
Organization (O)
  • Let's Encrypt
Common Name (CN)
  • R12
validity period
Not valid before
2026-03-08
Not valid after
2026-06-06
This certifcate has been verified for the following usages:
  • Digital Signature
  • Key Encipherment
  • TLS Web Server Authentication
Fingerprints
SHA256
1B:67:A7:D4:1B:1D:9E:CE:E4:23:A1:24:BE:1A:2A:DC:D7:53:83:5D:DC:E5:BB:E4:62:5E:FB:BF:F8:DB:4B:5D
SHA1
FF:3C:A3:6B:7D:E5:6F:9B:02:25:3D:B6:34:62:66:F7:CE:30:69:6A
X509v3 extensions
subjectKeyIdentifier
  • 7C:FD:32:CA:8A:43:94:18:67:61:67:87:4C:BA:61:3E:C6:93:80:B7
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/50.crl
ct_precert_scts
  • Signed Certificate Timestamp:
  • Version : v1 (0x0)
  • Log ID : 71:7E:95:F3:C2:38:8A:6D:B1:E3:84:49:3D:31:E1:5A:
  • A9:62:08:76:2D:42:00:E0:05:0C:D0:67:B5:A6:61:E2
  • Timestamp : Mar 8 02:18:08.808 2026 GMT
  • Extensions: 00:00:05:00:0B:25:64:52
  • Signature : ecdsa-with-SHA256
  • 30:45:02:21:00:AE:EA:B9:E6:B7:46:61:3F:9B:61:FE:
  • 5A:8A:62:4A:1B:5C:07:1E:EB:17:CA:E9:B7:DD:EB:E6:
  • A1:C0:4B:21:72:02:20:0D:12:13:92:3D:E7:0A:9B:8E:
  • D5:52:98:F5:01:BB:D0:F3:F1:FA:0B:C8:90:5B:99:C3:
  • 37:3D:C7:E0:1C:F7:7D
  • Signed Certificate Timestamp:
  • Version : v1 (0x0)
  • Log ID : 64:11:C4:6C:A4:12:EC:A7:89:1C:A2:02:2E:00:BC:AB:
  • 4F:28:07:D4:1E:35:27:AB:EA:FE:D5:03:C9:7D:CD:F0
  • Timestamp : Mar 8 02:18:10.671 2026 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:45:02:20:39:4F:AA:D0:D5:9B:0A:5B:20:52:6E:DB:
  • EF:3B:17:88:31:3C:29:D3:B4:D9:8E:85:2A:0C:47:A8:
  • 13:34:51:9D:02:21:00:8A:34:4A:B2:C0:03:0B:D6:74:
  • 30:BC:C6:E1:96:C0:28:07:13:3A:F4:ED:84:EE:44:F2:
  • 02:9D:8E:73:2F:83:99