SSL-Tools

SSL check results of mail.gsk-es.ru

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Discover if the mail servers for mail.gsk-es.ru 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 Thu, 18 Sep 2025 00:31:08 +0000

The mailservers of mail.gsk-es.ru can be reached through a secure connection.

Servers

Incoming Mails

These servers are responsible for incoming mails to @mail.gsk-es.ru addresses.

Hostname / IP address Priority STARTTLS Certificates Protocol
mail.gsk-es.ru
194.67.96.67
 -
supported
gsk-es.ru
DANE
missing
PFS
supported
Heartbleed
not vulnerable
Weak ciphers
not found
  • TLSv1.2
  • SSLv3
3 s

Outgoing Mails

We have not received any emails from a @mail.gsk-es.ru address so far. Test mail delivery

Certificates

First seen at:

CN=gsk-es.ru

Certificate chain
  • gsk-es.ru
    • remaining
    • 2048 bit
    • sha256WithRSAEncryption
      • R12
        • remaining
        • 2048 bit
        • sha256WithRSAEncryption
          • ISRG Root X1 (Certificate is self-signed.)
            • remaining
            • 4096 bit
            • sha256WithRSAEncryption
Subject
Common Name (CN)
  • gsk-es.ru
Alternative Names
  • gsk-es.ru
  • mail.gsk-es.ru
Issuer
Country (C)
  • US
Organization (O)
  • Let's Encrypt
Common Name (CN)
  • R12
validity period
Not valid before
2025-09-08
Not valid after
2025-12-07
This certifcate has been verified for the following usages:
  • Digital Signature
  • Key Encipherment
  • TLS Web Server Authentication
  • TLS Web Client Authentication
Fingerprints
SHA256
85:2C:5E:F4:3E:28:C2:59:29:76:A2:6A:92:E1:56:E8:C5:85:F7:A0:B4:EE:FB:53:94:BB:2D:7F:2B:24:E3:93
SHA1
68:9F:C7:04:FF:7B:0A:58:86:B9:13:23:8B:16:EC:52:51:C9:9B:01
X509v3 extensions
subjectKeyIdentifier
  • 09:C2:66:A0:C3:66:68:95:76:C3:C0:B6:71:4C:3D:D5:20:4B:D8:EC
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/101.crl
ct_precert_scts
  • 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 : Sep 8 11:55:09.146 2025 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:44:02:20:64:1E:69:2D:55:D3:E8:0C:70:DA:1E:20:
  • 98:B5:1C:34:27:9E:F2:B6:77:89:DC:21:30:CD:1F:80:
  • 26:A6:5A:F4:02:20:4A:BF:C6:AE:DF:4E:FE:EF:16:9E:
  • C8:77:34:89:C7:68:0A:73:30:94:12:8C:64:04:00:F8:
  • FD:89:01:1C:76:92
  • Signed Certificate Timestamp:
  • Version : v1 (0x0)
  • Log ID : 12:F1:4E:34:BD:53:72:4C:84:06:19:C3:8F:3F:7A:13:
  • F8:E7:B5:62:87:88:9C:6D:30:05:84:EB:E5:86:26:3A
  • Timestamp : Sep 8 11:55:09.129 2025 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:45:02:20:7F:07:6D:9B:C4:D2:FA:C9:82:4E:12:16:
  • 97:40:46:C3:79:CE:DF:97:45:E8:B9:72:0F:C0:C4:53:
  • 7C:B5:AD:EC:02:21:00:F1:37:2C:F8:19:F5:F4:17:89:
  • C1:8E:33:E9:DD:E1:EF:AC:C5:B7:69:B7:32:18:CA:3A:
  • D4:13:A4:2C:C0:A3:AB