TLS-RPT checker & generator
Check an existing TLS-RPT record, or build a new one to publish - which asks senders to report TLS delivery problems back to you.
Check your record
Enter a domain to see whether it publishes a TLS-RPT record.
Build a record
Generate the TLS-RPT record that asks sending servers to report TLS delivery problems to you.
Publish as a TXT record at _smtp._tls.yourdomain.com
What this tells you
TLS-RPT asks sending servers to report back when they can’t deliver mail to you securely – the early-warning system for MTA-STS problems. This tool checks the record at _smtp._tls.yourdomain.com. DMARCER ingests these reports and breaks the failures down by type and sender – run a full check to see your transport-security posture.
What is TLS-RPT? →
The basics, in plain English.
MTA-STS checker →
The policy TLS-RPT reports on.
Continuous monitoring →
Watch every control around the clock.