SSL-Tools

SSL check results of mail.keremoptik.com.tr

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Discover if the mail servers for mail.keremoptik.com.tr 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 Tue, 28 Jul 2026 00:34:36 +0000

The mailservers of mail.keremoptik.com.tr can be reached through a secure connection.

Servers

Incoming Mails

These servers are responsible for incoming mails to @mail.keremoptik.com.tr addresses.

Hostname / IP address Priority STARTTLS Certificates Protocol
mail.keremoptik.com.tr
104.247.179.218
 -
supported
mail.keremoptik.com.tr
DANE
missing
PFS
supported
Heartbleed
not vulnerable
Weak ciphers
not found
  • TLSv1.2
  • SSLv3
4 s

Outgoing Mails

We have not received any emails from a @mail.keremoptik.com.tr address so far. Test mail delivery

Certificates

First seen at:

CN=mail.keremoptik.com.tr

Certificate chain
  • mail.keremoptik.com.tr
    • remaining
    • 384 bit
    • ecdsa-with-SHA384
      • YE2
        • remaining
        • 384 bit
        • ecdsa-with-SHA384
          • Root YE
            • remaining
            • 384 bit
            • ecdsa-with-SHA384
              • ISRG Root X2 (Certificate is self-signed.)
                • remaining
                • 384 bit
                • ecdsa-with-SHA384
Subject
Common Name (CN)
  • mail.keremoptik.com.tr
Alternative Names
  • mail.keremoptik.com.tr
Issuer
Country (C)
  • US
Organization (O)
  • Let's Encrypt
Common Name (CN)
  • YE2
validity period
Not valid before
2026-07-13
Not valid after
2026-10-11
This certifcate has been verified for the following usages:
  • Digital Signature
  • TLS Web Server Authentication
Fingerprints
SHA256
9A:83:25:12:64:79:4F:47:66:3D:63:A3:02:27:F8:8D:F0:C4:39:39:F6:77:24:34:4A:0F:57:E3:4C:A4:6D:1A
SHA1
45:C5:13:40:BF:65:C0:FD:B6:DF:4A:4B:B0:23:1A:14:5E:50:8F:6F
X509v3 extensions
subjectKeyIdentifier
  • 8A:DA:41:53:B5:0A:0A:77:FA:F0:1E:46:2E:CF:87:90:4B:46:94:67
authorityKeyIdentifier
  • keyid:B9:59:F2:8E:CF:22:F0:86:D3:37:48:FF:76:14:18:BA:82:D8:55:87
authorityInfoAccess
  • CA Issuers - URI:http://ye2.i.lencr.org/
certificatePolicies
  • Policy: 2.23.140.1.2.1
crlDistributionPoints
  • Full Name:
  • URI:http://ye2.c.lencr.org/42.crl
ct_precert_scts
  • Signed Certificate Timestamp:
  • Version : v1 (0x0)
  • Log ID : D8:09:55:3B:94:4F:7A:FF:C8:16:19:6F:94:4F:85:AB:
  • B0:F8:FC:5E:87:55:26:0F:15:D1:2E:72:BB:45:4B:14
  • Timestamp : Jul 13 07:19:18.013 2026 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:46:02:21:00:F5:2B:96:EB:9A:38:CA:6B:B8:DC:15:
  • 45:46:C2:FD:2E:D4:22:DF:1C:E6:FB:56:26:DD:EF:07:
  • 73:C1:24:47:86:02:21:00:AD:3D:D7:6E:55:0D:8A:9A:
  • FE:D3:8A:EE:04:66:BF:AD:D4:31:9F:17:0B:AD:1A:B6:
  • A7:4E:79:C9:D3:43:B9:63
  • Signed Certificate Timestamp:
  • Version : v1 (0x0)
  • Log ID : 1A:8B:9D:6B:0F:FE:BF:81:B4:79:39:C6:D2:31:0A:86:
  • D6:D1:02:D4:F0:46:E2:18:2C:9D:E3:5F:5E:26:25:EF
  • Timestamp : Jul 13 07:19:18.726 2026 GMT
  • Extensions: 00:00:05:00:29:2B:24:0C
  • Signature : ecdsa-with-SHA256
  • 30:45:02:20:41:C8:D0:A2:51:15:F1:E3:98:C6:15:5A:
  • EF:C9:6E:19:F8:9A:50:D2:8C:0D:4F:5B:84:78:5B:99:
  • E5:0F:77:0E:02:21:00:E0:99:8E:D5:E1:9B:71:9C:2F:
  • 80:4A:44:3E:30:55:4C:BD:09:6D:68:29:C1:D1:9B:19:
  • 5B:06:B5:5A:74:25:EE