The DMARC protocol enables domain owners to validate the use of their domain in email messages and request feedback on email authentication.

RFC 9989: Domain-Based Message Authentication, Reporting, and Conformance (DMARC), T. Herr, Ed., et al., https://www.rfc-editor.org/info/rfc9989 #RFC This document describes the Domain-based Message Authentication, Reporting, and Conformance (DMARC) protocol. DMARC permits the owner of an email's Author Domain to enable validation of the domain's use to indicate the Domain Owner's or Public 1/3

RFC 9990: Domain-Based Message Authentication, Reporting, and Conformance (DMARC) Aggregate Reporting, A. Brotman, Ed., https://www.rfc-editor.org/info/rfc9990 #RFC Domain-based Message Authentication, Reporting, and Conformance (DMARC) allows for Domain Owners to request aggregate reports from receivers. This report is an XML document and contains extensible elements that allow for other 1/2

RFC 9991: Domain-Based Message Authentication, Reporting, and Conformance (DMARC) Failure Reporting, S. Jones, Ed., et al., https://www.rfc-editor.org/info/rfc9991 #RFC Domain-based Message Authentication, Reporting, and Conformance (DMARC) is a mechanism by which a Domain Owner can request feedback about email messages using their domain in the From: address field. This document describes 1/2