SSL Security Test of
optimum.net

Test the SSL/TLS stack of your web or email server for security, cryptographic flaws and misconfigurations, and compliance with NIST & HIPAA
Free online tool with PDF report
  • Web Server SSL/TLS Security
  • Post-Quantum Cryptography (PQC) Readiness
  • Email Server SSL/TLS Security
  • PCI DSS, GDPR, HIPAA & NIST Compliance
  • SSL Certificate Validity
  • Best-Practices Compliance
Free online tool with PDF report
188,337,868 tests performed
Provided "as is" without any warranty of any kind
326
tests
running
85,140
tests
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Summary of optimum.net:587 (SMTP) SSL Security Test

Provided "as is" without any warranty of any kind.
This test was made 337 days ago and may be outdated
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Date/Time:Nov 30th, 2025 00:54 GMT+0
Source IP/Port:167.206.237.230:587
Protocol:SMTP
Location:Uniondale, United StatesUnited States
Your final score:
  • A
  • B
  • C
  • F
N
It seems that the port is closed, or your system is blocking one of our IP ranges: 192.175.111.224/27, 64.15.129.96/27. Please, whitelist our subnets for successful continuation of the test.
Misconfiguration or weakness
The tested service seems to be a SMTP.
Information

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