What is TLS-RPT?
Learn what TLS-RPT is and how SMTP TLS reporting works alongside MTA-STS.
What TLS-RPT does
TLS-RPT stands for SMTP TLS Reporting. It lets domains receive reports about email delivery issues related to TLS and transport policies.
These reports are especially useful when rolling out MTA-STS or checking transport-level mail security.
How it is published
TLS-RPT is published in DNS as a TXT record under _smtp._tls.yourdomain.com.
It usually contains a rua destination showing where reports should be sent.
Why it helps
TLS-RPT gives visibility into delivery attempts that may not have met policy expectations.
It helps administrators identify transport problems that would otherwise be difficult to see.