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Interoperability Issues between Domain-based Message Authentication, Reporting, and Conformance (DMARC) and Indirect Email Flows (RFC7960) Disclosure Number: IPCOM000247723D
Original Publication Date: 2016-Sep-01
Included in the Prior Art Database: 2016-Sep-30
Document File: 54 page(s) / 59K

Publishing Venue

Internet Society Requests For Comment (RFCs)

Related People

F. Martin: AUTHOR [+8]


DMARC [RFC7489] introduces a mechanism for expressing domain-level policies and preferences for message validation, disposition, and reporting. The DMARC mechanism, especially when employed with restrictive policies, encounters several different types of interoperability issues due to third-party message sourcing, message transformation, or rerouting. In particular, DMARC with restrictive policies causes problems for many Mailing Lists.

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Internet Engineering Task Force (IETF)                    F. Martin, Ed. Request for Comments: 7960                                      LinkedIn Category: Informational                                     E. Lear, Ed. ISSN: 2070-1721                                       Cisco Systems GmbH                                                          T. Draegen, Ed.                                                           dmarcian, inc.                                                           E. Zwicky, Ed.                                                                    Yahoo                                                         K. Andersen, Ed.                                                                 LinkedIn                                                           September 2016

   Interoperability Issues between Domain-based Message Authentication,       Reporting, and Conformance (DMARC) and Indirect Email Flows


   Domain-based Message Authentication, Reporting, and Conformance    (DMARC) introduces a mechanism for expressing domain-level policies    and preferences for email message validation, disposition, and    reporting.  However, the DMARC mechanism enables potentially    disruptive interoperability issues when messages do not flow directly    from the author's administrative domain to the final Recipients.    Collectively, these email flows are referred to as "indirect email    flows".  This document describes these interoperability issues and    presents possible methods for addressing them.

Status of This Memo

   This document is not an Internet Standards Track specification; it is    published for informational purposes.

   This document is a product of the Internet Engineering Task Force    (IETF).  It represents the consensus of the IETF community.  It has    received public review and has been approved for publication by the    Internet Engineering Steering Group (IESG).  Not all documents    approved by the IESG are a candidate for any level of Internet    Standard; see Section 2 of RFC 7841.

   Information about the current status of this document, any errata,    and how to provide feedback on it may be obtained at

 Martin, et al.                Informational                     [Page 1]
 RFC 7960           DMA...