Online DMARC record lookup, verify email authentication policies, detect configuration issues
β FAQ
What is a DMARC record?
DMARC (Domain-based Message Authentication, Reporting & Conformance) record is a DNS TXT record that tells email receivers what to do with messages that fail SPF or DKIM authentication checks.
What are the DMARC policy values?
The p tag has three values: none (monitor only, no action), quarantine (mark failed messages as spam), reject (reject failed messages). Start with none and gradually upgrade to reject.
How does DMARC relate to SPF and DKIM?
DMARC builds on SPF and DKIM. SPF verifies sending server IP, DKIM verifies email signature, and DMARC defines the policy for handling authentication failures, plus alignment checks.
What are DMARC reports?
DMARC reports (rua/ruf tags) let domain owners know who is sending email on their behalf. Aggregate reports (rua) provide statistics, forensic reports (ruf) provide details about failed messages.