gs.dmarc Documentation

Author:Michael JasonSmith
Contact:Michael JasonSmith <>
Copyright:This document is licensed under a Creative Commons Attribution-Share Alike 4.0 International License by

This product allows systems look up and report on the DMARC (RFC 7489: Domain-based Message Authentication, Reporting and Conformance) status of a domain. DMARC allows the owner of a domain to publish a key that is used to verify if an email message actually originated from the domain, and to publish what to do if the verification fails. It is an extension of DKIM (DomainKeys Identified Mail, RFC 6376) and SPF (Sender Policy Framework, RFC 4408).

Specifically this product supplies ReceiverPolicy for enumerating the different DMARC policies, and the receiver_policy() function for querying the policy for a given domain.


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