DMARC Record Lookup

Look up and parse the DMARC policy record for any domain. Verify your email authentication policy.

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Frequently asked questions

What is DMARC?
DMARC (Domain-based Message Authentication, Reporting and Conformance) tells receiving mail servers what to do when an email fails SPF or DKIM checks. Policies are none, quarantine, or reject.
What is the rua/ruf tag?
rua specifies where aggregate reports are sent (daily XML digests). ruf specifies where forensic reports go (individual failure reports). Both are email addresses.
What policy should I use?
Start with p=none to monitor without affecting delivery. Once you are confident in your SPF and DKIM, move to p=quarantine, then p=reject for the strongest protection.