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SSL check results of sip.strathfieldcollege.edu.au

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Discover if the mail servers for sip.strathfieldcollege.edu.au 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 Thu, 30 Oct 2025 01:39:15 +0000

The mailservers of sip.strathfieldcollege.edu.au can be reached through a secure connection.

Servers

Incoming Mails

These servers are responsible for incoming mails to @sip.strathfieldcollege.edu.au addresses.

Hostname / IP address Priority STARTTLS Certificates Protocol
sip.strathfieldcollege.edu.au
203.161.56.89
 -
supported
sip.strathfieldcollege.edu.au
DANE
missing
PFS
supported
Heartbleed
not vulnerable
Weak ciphers
not found
  • TLSv1.2
  • TLSv1.1
  • TLSv1.0
  • SSLv3
9 s

Outgoing Mails

We have not received any emails from a @sip.strathfieldcollege.edu.au address so far. Test mail delivery

Certificates

First seen at:

CN=sip.strathfieldcollege.edu.au

Certificate chain
  • sip.strathfieldcollege.edu.au
    • remaining
    • 2048 bit
    • sha256WithRSAEncryption
      • R12
        • remaining
        • 2048 bit
        • sha256WithRSAEncryption
          • ISRG Root X1 (Certificate is self-signed.)
            • remaining
            • 4096 bit
            • sha256WithRSAEncryption
Subject
Common Name (CN)
  • sip.strathfieldcollege.edu.au
Alternative Names
  • sip.strathfieldcollege.edu.au
Issuer
Country (C)
  • US
Organization (O)
  • Let's Encrypt
Common Name (CN)
  • R12
validity period
Not valid before
2025-10-26
Not valid after
2026-01-24
This certifcate has been verified for the following usages:
  • Digital Signature
  • Key Encipherment
  • TLS Web Server Authentication
  • TLS Web Client Authentication
Fingerprints
SHA256
12:6D:B9:BF:3F:F8:DC:82:1C:DA:CE:D5:56:BC:2C:98:00:39:E7:4F:14:24:F9:A2:3D:30:B6:51:39:48:AA:85
SHA1
2C:E3:4A:B3:CC:33:08:6D:F8:95:8C:95:BF:B3:7D:83:41:CD:9D:E1
X509v3 extensions
subjectKeyIdentifier
  • 3F:FB:5C:98:C2:8C:7C:5E:B3:61:7A:E9:2E:BB:0F:02:6A:DC:FA:AF
authorityKeyIdentifier
  • keyid:00:B5:29:F2:2D:8E:6F:31:E8:9B:4C:AD:78:3E:FA:DC:E9:0C:D1:D2
authorityInfoAccess
  • CA Issuers - URI:http://r12.i.lencr.org/
certificatePolicies
  • Policy: 2.23.140.1.2.1
crlDistributionPoints
  • Full Name:
  • URI:http://r12.c.lencr.org/27.crl
ct_precert_scts
  • Signed Certificate Timestamp:
  • Version : v1 (0x0)
  • Log ID : 0E:57:94:BC:F3:AE:A9:3E:33:1B:2C:99:07:B3:F7:90:
  • DF:9B:C2:3D:71:32:25:DD:21:A9:25:AC:61:C5:4E:21
  • Timestamp : Oct 26 12:39:01.855 2025 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:44:02:20:40:4A:9D:78:10:45:F8:8B:5F:18:5D:35:
  • BD:43:47:E0:00:7A:03:8F:2F:58:07:8D:AE:EA:13:1E:
  • A9:40:BB:67:02:20:78:26:BE:70:85:35:55:4A:E1:8A:
  • 28:C8:D1:DE:A7:D8:34:04:B1:9D:89:E9:BA:AD:96:F1:
  • 69:48:19:F8:53:4D
  • 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 : Oct 26 12:39:03.865 2025 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:46:02:21:00:F8:61:BD:92:4B:6A:F4:DF:2F:9C:21:
  • 5D:E6:B1:1E:D8:A1:7B:A4:8E:18:20:DE:1D:18:ED:76:
  • B2:15:9F:1A:CC:02:21:00:EA:BD:9D:37:6E:72:C6:C5:
  • 0F:DA:75:D1:AB:CE:E7:F6:E1:1E:14:BE:B5:34:1C:00:
  • BD:83:9E:2A:8E:1B:3D:62