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TLS-RPT — an SMTP TLS reporting mechanism through which sending systems deliver aggregate JSON reports about successful sessions and policy or negotiation failures to recipient domains.
The mechanism complements SPF, DKIM, DMARC, or TLS and addresses a separate need, such as preserving authentication through forwarding, validating a brand, defining an encryption policy, or reporting failures. It does not replace baseline email authentication.
TLS-RPT — an SMTP TLS reporting mechanism through which sending systems deliver aggregate JSON reports about successful sessions and policy or negotiation failures to recipient domains.
It conveys an additional verifiable signal between sender and receiver when ordinary authentication or transport encryption is insufficient for a specific delivery scenario.
Establish correct DNS, SPF, DKIM, DMARC, and TLS first, then satisfy the selected specification. Verify reports and actual message headers, not only the presence of a DNS record.
