SSL-Tools

SSL check results of zemchenko.com

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Discover if the mail servers for zemchenko.com 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

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Report created Sat, 16 Aug 2025 00:30:07 +0000

The mailservers of zemchenko.com can be reached through a secure connection.

Servers

Incoming Mails

These servers are responsible for incoming mails to @zemchenko.com addresses.

Hostname / IP address Priority STARTTLS Certificates Protocol
mail.zemchenko.com
5.45.127.112
 10
supported
mail.zemchenko.com
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 @zemchenko.com address so far. Test mail delivery

Certificates

First seen at:

CN=mail.zemchenko.com

Certificate chain
  • mail.zemchenko.com
    • remaining
    • 2048 bit
    • sha256WithRSAEncryption
      • R11
        • remaining
        • 2048 bit
        • sha256WithRSAEncryption
          • ISRG Root X1 (Certificate is self-signed.)
            • remaining
            • 4096 bit
            • sha256WithRSAEncryption
Subject
Common Name (CN)
  • mail.zemchenko.com
Alternative Names
  • mail.zemchenko.com
  • zemchenko.com
Issuer
Country (C)
  • US
Organization (O)
  • Let's Encrypt
Common Name (CN)
  • R11
validity period
Not valid before
2025-08-15
Not valid after
2025-11-13
This certifcate has been verified for the following usages:
  • Digital Signature
  • Key Encipherment
  • TLS Web Server Authentication
  • TLS Web Client Authentication
Fingerprints
SHA256
92:F3:A7:75:0A:4B:19:DD:75:1C:C6:AF:61:6B:FD:34:5C:41:9C:FE:65:C2:26:3C:13:93:9E:D3:93:8B:EB:95
SHA1
8E:4A:26:2D:02:00:CB:44:07:82:75:6B:8C:6D:04:29:BA:E1:FE:D0
X509v3 extensions
subjectKeyIdentifier
  • 0C:27:73:A9:C2:42:1C:05:5A:F8:78:2B:8E:05:45:7E:E2:2D:98:6A
authorityKeyIdentifier
  • keyid:C5:CF:46:A4:EA:F4:C3:C0:7A:6C:95:C4:2D:B0:5E:92:2F:26:E3:B9
authorityInfoAccess
  • CA Issuers - URI:http://r11.i.lencr.org/
certificatePolicies
  • Policy: 2.23.140.1.2.1
crlDistributionPoints
  • Full Name:
  • URI:http://r11.c.lencr.org/4.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 : Aug 15 09:22:03.437 2025 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:46:02:21:00:A8:24:52:3F:D7:EE:21:9F:15:F9:7D:
  • 51:43:92:DB:68:6F:9F:4F:B3:7C:20:13:7B:58:AB:4D:
  • 62:6C:41:32:E4:02:21:00:CA:10:35:57:F7:35:B9:2D:
  • BD:47:66:1C:56:EC:F8:26:B3:AE:99:FD:0B:61:40:B6:
  • C5:80:16:C9:51:A4:84:6D
  • 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 : Aug 15 09:22:03.459 2025 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:45:02:21:00:86:1A:2A:05:64:F5:B2:AA:4A:C9:2F:
  • FC:87:E2:81:00:0D:25:D9:4E:42:C5:D8:07:03:21:37:
  • F6:89:C0:A1:94:02:20:16:D1:4E:53:6D:04:1B:7C:92:
  • F2:93:8A:04:F1:0E:4F:2E:BF:1D:B7:90:1E:B1:10:CF:
  • 7B:90:9A:AA:5A:F3:B4