SSL-Tools

SSL check results of z9.com

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Discover if the mail servers for z9.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

JSON Refresh

Report created Wed, 02 Sep 2026 05:32:08 +0000

We can not guarantee a secure connection to the mailservers of z9.com!

Please contact the operator of z9.com and ask him or her to solve this problem. This result stays accessible under the following address:

/mailservers/z9.com

Servers

Incoming Mails

These servers are responsible for incoming mails to @z9.com addresses.

Hostname / IP address Priority STARTTLS Certificates Protocol
mail.z9.com
45.63.35.81
 0
supported
mail.z9.com
DANE
missing
PFS
supported
Heartbleed
not vulnerable
Weak ciphers
not found
  • TLSv1.2
  • SSLv3
7 s
mail2.rollernet.us
2607:fe70:0:4::a
Results incomplete
10
supported
not checked
DANE
missing
PFS
supported
Heartbleed
not vulnerable
Weak ciphers
not found
  • TLSv1.2
  • SSLv3
2 s
mail2.rollernet.us
208.79.241.2
Results incomplete
10
supported
not checked
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 @z9.com address so far. Test mail delivery

Certificates

First seen at:

CN=mail.z9.com

Certificate chain
  • mail.z9.com
    • remaining
    • 2048 bit
    • sha256WithRSAEncryption
    • Unknown Authority
      Sectigo Public Server Authentication CA DV R36
Subject
Common Name (CN)
  • mail.z9.com
Alternative Names
  • mail.z9.com
Issuer
Country (C)
  • GB
Organization (O)
  • Sectigo Limited
Common Name (CN)
  • Sectigo Public Server Authentication CA DV R36
validity period
Not valid before
2026-08-30
Not valid after
2027-03-16
This certifcate has been verified for the following usages:
  • Digital Signature
  • Key Encipherment
  • TLS Web Server Authentication
  • TLS Web Client Authentication
Fingerprints
SHA256
5E:81:E6:58:1C:AA:6B:4C:75:25:38:51:02:DA:65:51:39:C9:CB:0F:4B:CC:74:95:30:DD:95:99:EE:CE:71:DD
SHA1
51:A6:40:E2:66:7C:58:EA:34:8A:8E:25:BD:E8:C2:22:3B:60:1D:E5
X509v3 extensions
authorityKeyIdentifier
  • keyid:68:C0:12:16:18:0E:AF:CE:F6:87:A6:32:57:A3:46:51:5D:CB:07:27
subjectKeyIdentifier
  • DD:30:D3:A5:B3:D2:7B:1D:A4:B9:61:AB:A2:DE:4C:06:22:58:7E:5E
certificatePolicies
  • Policy: 1.3.6.1.4.1.6449.1.2.2.7
  • CPS: https://sectigo.com/CPS
  • Policy: 2.23.140.1.2.1
authorityInfoAccess
  • CA Issuers - URI:http://crt.sectigo.com/SectigoPublicServerAuthenticationCADVR36.crt
  • OCSP - URI:http://ocsp.sectigo.com
ct_precert_scts
  • Signed Certificate Timestamp:
  • Version : v1 (0x0)
  • Log ID : 1C:9F:68:2C:E9:FA:F0:45:69:50:F8:1B:96:8A:87:DD:
  • DB:32:10:D8:4C:E6:C8:B2:E3:82:52:4A:C4:CF:59:9F
  • Timestamp : Aug 30 07:30:35.360 2026 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:46:02:21:00:B2:15:6F:EE:62:1B:3C:CC:53:24:2C:
  • 8D:42:B7:65:DF:F7:18:A5:44:13:AE:0C:0C:CE:31:42:
  • C0:09:11:56:E2:02:21:00:C7:F5:28:CE:3C:BB:80:25:
  • FF:EB:DF:B9:A5:05:8C:79:AB:C4:53:F1:23:2D:3B:D1:
  • 4D:3A:34:C8:09:87:7A:A9
  • Signed Certificate Timestamp:
  • Version : v1 (0x0)
  • Log ID : 8E:CA:47:0B:AC:DE:6A:F3:A2:06:B0:A4:7A:84:B7:46:
  • FE:1F:C6:BF:95:3E:25:E6:9B:4E:E4:02:48:F3:C6:E8
  • Timestamp : Aug 30 07:30:36.299 2026 GMT
  • Extensions: 00:00:05:00:0B:B8:89:9B
  • Signature : ecdsa-with-SHA256
  • 30:46:02:21:00:B5:6A:2D:4C:7E:03:5B:59:B4:26:90:
  • 48:82:D2:8A:6E:E0:F5:5A:D7:3E:0D:65:0C:70:AE:84:
  • 43:50:DB:7E:C6:02:21:00:DE:8C:13:E7:B9:91:7D:FE:
  • E2:4F:7F:E2:D7:89:42:FB:FC:DF:F4:57:33:DC:4F:6E:
  • DD:DB:40:98:DA:6A:63:07
  • Signed Certificate Timestamp:
  • Version : v1 (0x0)
  • Log ID : 59:6E:6C:33:86:94:B2:59:72:A2:56:C8:A0:E8:DD:90:
  • 4A:76:E8:08:3D:DA:87:3B:01:08:38:28:14:3C:EE:59
  • Timestamp : Aug 30 07:30:35.644 2026 GMT
  • Extensions: 00:00:05:00:02:A9:C0:4C
  • Signature : ecdsa-with-SHA256
  • 30:46:02:21:00:A5:8B:2D:EC:C0:78:06:3B:3D:D1:60:
  • 5F:A0:B4:49:E5:17:32:C3:27:EF:9C:4A:55:9E:CE:86:
  • 94:0D:B7:25:63:02:21:00:E2:96:CF:EC:80:2C:9A:B0:
  • ED:4B:3D:05:7B:0E:CB:00:86:14:30:10:3B:01:5C:9C:
  • 5A:70:0E:46:DD:78:90:29