Terms of Use

Last updated: May 2026.

The service

DMARC Sentinel (the "Service") runs free audits against the public DNS records of a domain name you submit. No account is required. We make no guarantee of availability.

Authorised use

By submitting a domain you confirm you have permission to audit it. Don't use this service to scan domains you don't own or haven't been authorised to test. We rate-limit aggressively.

Accuracy

We do our best to interpret the relevant RFCs correctly, but the Service is provided "as is" with no warranty. Always verify changes with your own tooling before rolling them out.

Liability

To the maximum extent permitted by law, FXRM is not liable for damages arising from use of the Service. Our total liability is capped at £0 — this is a free tool.

Contact

Questions: hello@dmarcsentinel.com.