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RFC 9991: Domain-Based Message Authentication, Reporting, and Conformance (DMARC) Failure Reporting

In plain English — editorial summary, not part of the 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 "failure reports", or "failed message reports", which provide details about individual messages that failed to authenticate according to the DMARC mechanism. This document updates RFC 6591 and obsoletes RFC 7489.

Document record

Document ID
RFC9991
Published
May 2026
Authors
S. Jones; A. Vesely
Status
PROPOSED STANDARD
Stream
IETF
Area
art
Pages
13
Also known as
—
Obsoletes:
RFC 7489
Updates:
RFC 6591

Topics

Standards lineage

This document is one revision in a chain of 5 RFCs, each formally replacing the one before it.

  1. RFC 7489 (2015)
  2. RFC 9091 (2021)
  3. RFC 9989 (2026)
  4. RFC 9990 (2026)
  5. RFC 9991 (2026)

Read the full history of Domain-Based Message Authentication, Reporting, and Conformance (DMARC) Failure Reporting →

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About this page

The document record above — title, authors, date, status, stream, area, relationships, DOI and errata — is imported verbatim from the public RFC Editor index. The “in plain English” section is editorial: written by The metasystema editorial team, not part of the RFC. Where the two differ, the RFC text governs.

Last checked against the RFC Editor index on . RFCs are never revised after publication; changes are issued as new documents.

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canonical URL: /rfc/9991-domain-based-message-authentication-reporting-and-conformance-dmarc-failure-repo