SSL-Tools

SSL check results of optive.ch

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Discover if the mail servers for optive.ch 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 Fri, 21 Nov 2025 08:48:26 +0000

The mailservers of optive.ch can be reached through a secure connection.

Servers

Incoming Mails

These servers are responsible for incoming mails to @optive.ch addresses.

Hostname / IP address Priority STARTTLS Certificates Protocol
mail.optive.ch
81.63.174.43
 10
supported
autodiscover.optive.ch
DANE
missing
PFS
supported
Heartbleed
not vulnerable
Weak ciphers
not found
  • TLSv1.2
  • SSLv3
1 s

Outgoing Mails

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

Certificates

First seen at:

CN=autodiscover.optive.ch

Certificate chain
  • autodiscover.optive.ch
    • remaining
    • 3072 bit
    • sha256WithRSAEncryption
      • R13
        • remaining
        • 2048 bit
        • sha256WithRSAEncryption
          • ISRG Root X1 (Certificate is self-signed.)
            • remaining
            • 4096 bit
            • sha256WithRSAEncryption
Subject
Common Name (CN)
  • autodiscover.optive.ch
Alternative Names
  • autodiscover.optive.ch
  • mail.optive.ch
  • mail2.optive.ch
  • owa.optive.ch
  • owa2.optive.ch
Issuer
Country (C)
  • US
Organization (O)
  • Let's Encrypt
Common Name (CN)
  • R13
validity period
Not valid before
2025-11-20
Not valid after
2026-02-18
This certifcate has been verified for the following usages:
  • Digital Signature
  • Key Encipherment
  • TLS Web Server Authentication
  • TLS Web Client Authentication
Fingerprints
SHA256
D7:D1:2A:20:BA:77:D2:DA:1B:F9:0F:7E:D1:C5:26:4A:5C:BD:50:BC:42:D9:B1:DF:03:64:29:E2:BF:C1:E3:A3
SHA1
65:A8:27:D9:C6:9C:39:D0:E3:CF:32:F6:E0:2C:65:1C:AD:C8:5B:25
X509v3 extensions
subjectKeyIdentifier
  • 76:AD:F2:43:A4:37:34:12:2E:C9:20:3D:C7:86:B3:BF:F3:70:D0:AD
authorityKeyIdentifier
  • keyid:E7:AB:9F:0F:2C:33:A0:53:D3:5E:4F:78:C8:B2:84:0E:3B:D6:92:33
authorityInfoAccess
  • CA Issuers - URI:http://r13.i.lencr.org/
certificatePolicies
  • Policy: 2.23.140.1.2.1
crlDistributionPoints
  • Full Name:
  • URI:http://r13.c.lencr.org/65.crl
ct_precert_scts
  • Signed Certificate Timestamp:
  • Version : v1 (0x0)
  • Log ID : 19:86:D4:C7:28:AA:6F:FE:BA:03:6F:78:2A:4D:01:91:
  • AA:CE:2D:72:31:0F:AE:CE:5D:70:41:2D:25:4C:C7:D4
  • Timestamp : Nov 20 13:44:35.285 2025 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:45:02:20:67:E7:24:95:AD:4D:2F:FD:79:C6:F8:65:
  • 89:AF:1F:21:83:82:D7:89:15:8C:EF:79:FB:7F:9B:A0:
  • BC:F2:BC:9E:02:21:00:BB:34:D4:21:37:73:5B:AA:B0:
  • C3:98:EF:80:B3:4A:02:49:75:9D:FC:EB:D0:E3:28:84:
  • 3B:51:82:91:C9:39:AD
  • Signed Certificate Timestamp:
  • Version : v1 (0x0)
  • Log ID : 96:97:64:BF:55:58:97:AD:F7:43:87:68:37:08:42:77:
  • E9:F0:3A:D5:F6:A4:F3:36:6E:46:A4:3F:0F:CA:A9:C6
  • Timestamp : Nov 20 13:44:35.359 2025 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:45:02:21:00:97:C4:68:07:A3:CD:62:CC:1A:6B:06:
  • 91:21:C8:2C:09:BD:54:D6:77:F1:FD:37:5A:F4:23:91:
  • 57:91:59:A1:33:02:20:05:E8:17:CF:CD:09:EA:ED:63:
  • D1:62:00:3F:D3:13:EA:DE:39:C8:2E:9A:11:0C:2E:64:
  • 80:71:FF:B2:3E:3C:75