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What to Look For

A healthy TLS report shows:

Zero failure sessions
Policy mode: enforce
Policy type: MTA-STS or DANE
All MX hosts covered by valid, trusted certificates

testing mode means failures are reported but mail still flows unencrypted — upgrade to enforce to actively protect delivery.

About TLSRPT Reports

SMTP TLS Reporting (RFC 8460) lets mail senders report TLS negotiation outcomes to domain owners. Google, Microsoft, and other providers send these daily as JSON files to the address in your _smtp._tls TXT record.

Security

SMTP TLS Report Analyzer

Parse and analyze MTA-STS TLS reports (RFC 8460 / TLSRPT) from Google, Microsoft, or any mail provider.

Upload JSON File

or paste JSON below

Paste Report JSON

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