Free Tools
MTA-STS / TLS-RPT Checker
Check a domain's MTA-STS DNS discovery record, its HTTPS policy fetch and parsed policy, current MX coverage against that policy, and TLS-RPT reporting publication. This tool does not open an SMTP connection, perform STARTTLS, scan certificates, check DANE/TLSA, or send/fetch a TLS report.
Results
Overall publication
MTA-STS DNS discovery
Extensions
MTA-STS HTTPS policy fetch
Parsed MTA-STS policy
MX patterns
A pattern such as *.example.com matches exactly one left-most label, never a bare suffix and never more than one label.
Extensions
Current MX coverage
Covered
Uncovered
TLS-RPT
Reporting destinations (rua)
Extensions
Findings
No findings for this result.