SSL-Tools

SSL check results of vtc.edu.hk

NEW You can also bulk check multiple servers.

Discover if the mail servers for vtc.edu.hk 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, 20 Dec 2022 05:53:17 +0000

The mailservers of vtc.edu.hk can be reached through an encrypted connection.

However, we found problems that may affect the security.

Servers

Incoming Mails

These servers are responsible for incoming mails to @vtc.edu.hk addresses.

Hostname / IP address Priority STARTTLS Certificates Protocol
mx1.hc930-90.ap.iphmx.com
207.54.75.143
 10
supported
*.hc930-90.ap.iphmx.com
DANE
missing
PFS
supported
Heartbleed
not vulnerable
Weak ciphers
not found
  • TLSv1.2
  • TLSv1.1
  • SSLv3
21 s
mx1.hc930-90.ap.iphmx.com
23.90.107.127
 10
supported
*.hc930-90.ap.iphmx.com
DANE
missing
PFS
supported
Heartbleed
not vulnerable
Weak ciphers
not found
  • TLSv1.2
  • TLSv1.1
  • SSLv3
21 s
mx2.hc930-90.ap.iphmx.com
23.90.107.127
 10
supported
*.hc930-90.ap.iphmx.com
DANE
missing
PFS
supported
Heartbleed
not vulnerable
Weak ciphers
not found
  • TLSv1.2
  • TLSv1.1
  • SSLv3
22 s
mx2.hc930-90.ap.iphmx.com
207.54.75.143
 10
supported
*.hc930-90.ap.iphmx.com
DANE
missing
PFS
supported
Heartbleed
not vulnerable
Weak ciphers
not found
  • TLSv1.2
  • TLSv1.1
  • SSLv3
21 s

Outgoing Mails

We have received emails from these servers with @vtc.edu.hk sender addresses. Test mail delivery

Host TLS Version & Cipher
zagreb.vtc.edu.hk (202.75.80.141)
TLSv1.2 ECDHE-RSA-AES256-GCM-SHA384

Certificates

First seen at:

OU=Security Technology Business Unit,ST=California,O=Cisco Systems\, Inc.,L=San Bruno,CN=*.hc930-90.ap.iphmx.com,C=US

Certificate chain
  • *.hc930-90.ap.iphmx.com (Certificate is self-signed.)
    • remaining
    • 2048 bit
    • sha256WithRSAEncryption
    • Unknown Authority
Subject
Country (C)
  • US
Common Name (CN)
  • *.hc930-90.ap.iphmx.com
Locality (L)
  • San Bruno
Organization (O)
  • Cisco Systems, Inc.
State (ST)
  • California
Organizational Unit (OU)
  • Security Technology Business Unit
Issuer

Certificate is self-signed.

validity period
Not valid before
2022-06-06
Not valid after
2027-06-05
Fingerprints
SHA256
6A:C4:84:7E:B4:E8:66:E3:AF:C2:1F:C9:6B:C2:94:A9:D4:8F:E8:EF:F7:5A:68:BB:1D:71:33:2B:51:C3:F8:0D
SHA1
AE:F4:09:4D:1B:43:60:09:58:05:6B:F8:0E:97:BC:6D:B1:33:F8:01