SSL Validator Tool
Validate SSL/TLS certificates, inspect the chain of trust, check expiration, and verify cipher suites for any hostname. Supports custom ports and STARTTLS protocols.
What This Tool Checks
This tool connects to your server and performs a full SSL/TLS handshake, validating the certificate against trusted CAs, checking hostname match, and inspecting the complete chain of trust.
For mail servers use the appropriate port: 465 (SMTPS), 587 (SMTP STARTTLS), 993 (IMAPS), 995 (POP3S), or 25 (SMTP STARTTLS).
Trust Verification
Validates against system CA store (browser trust)
Chain Inspection
Full certificate chain with issuer details
Connection Details
TLS version, cipher suite, key exchange info