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ObsoletedEXPERIMENTALIETF stream

RFC 9091: Experimental Domain-Based Message Authentication, Reporting, and Conformance (DMARC) Extension for Public Suffix Domains

This RFC has been replaced. Do not implement against it for new work — it was formally obsoleted by RFC 9989.

Current document in this lineage: RFC 9989 — Domain-Based Message Authentication, Reporting, and Conformance (DMARC); RFC 9990 — Domain-Based Message Authentication, Reporting, and Conformance (DMARC) Aggregate Reporting; 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), defined in RFC 7489, permits a domain-controlling organization to express domain-level policies and preferences for message validation, disposition, and reporting, which a mail-receiving organization can use to improve mail handling. DMARC distinguishes the portion of a name that is a Public Suffix Domain (PSD), below which Organizational Domain names are created. The basic DMARC capability allows Organizational Domains to specify policies that apply to their subdomains, but it does not give that capability to PSDs. This document describes an extension to DMARC to fully enable DMARC functionality for PSDs. Some implementations of DMARC consider a PSD to be ineligible for DMARC enforcement. This specification addresses that case.

Document record

Document ID
RFC9091
Published
July 2021
Authors
S. Kitterman; T. Wicinski
Status
EXPERIMENTAL
Stream
IETF
Area
art
Pages
14
Also known as
—
Obsoleted by:
RFC 9989

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 →

Referenced by

One later RFC formally updates or obsoletes part of this document.

Related documents

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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/9091-experimental-domain-based-message-authentication-reporting-and-conformance-dmarc