Is TLS Handshake Test free to use?

Yes, TLS Handshake Test is completely free with no registration required.

Is my data safe with TLS Handshake Test?

Yes. Most processing happens in your browser. Files uploaded for conversion are processed server-side and automatically deleted.

SSL/TLS Connection Test

Mail Exchange Records

Check MX records for a domain's mail server configuration.

Sender Policy Framework

Validate SPF records for email sender authentication.

DomainKeys Identified Mail

Check DKIM records for email signature verification.

Domain-based Message Authentication

Validate DMARC records for email authentication policy.

SMTP/IMAP Port Test

Test connectivity of common email ports (25, 465, 587, 993).