MTA-STS Check
Check the MTA-STS DNS TXT record and fetch the HTTPS policy file for a domain.
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How to Check MTA-STS
Learn how to validate MTA-STS using both the DNS TXT record and the hosted HTTPS policy file, including common issues and troubleshooting steps.
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Learn what MTA-STS is, how it enforces TLS for email delivery, what the policy looks like, and how it works with DNS and HTTPS.
How to Check Email Security for a Domain
A practical workflow for checking email security for a domain, including SPF, DMARC, DKIM, MX, MTA-STS, TLS-RPT, BIMI, and provider setup.