DMARC (Domain-based Message Authentication, Reporting, and Conformance) Extension For PSDs (Public Suffix Domains)
draft-ietf-dmarc-psd-00

Document Type Active Internet-Draft (dmarc WG)
Last updated 2018-11-21
Replaces draft-kitterman-dmarc-psd
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Network Working Group                                       S. Kitterman
Internet-Draft                                    fTLD Registry Services
Updates: 7489 (if approved)                            November 21, 2018
Intended status: Informational
Expires: May 25, 2019

DMARC (Domain-based Message Authentication, Reporting, and Conformance)
               Extension For PSDs (Public Suffix Domains)
                        draft-ietf-dmarc-psd-00

Abstract

   DMARC (Domain-based Message Authentication, Reporting, and
   Conformance) is a scalable mechanism by which a mail-originating
   organization can express domain-level policies and preferences for
   message validation, disposition, and reporting, that a mail-receiving
   organization can use to improve mail handling.  DMARC policies can be
   applied at the individual domain level or for a set of domains at the
   organizational level.  The design of DMARC precludes grouping
   policies for a set of domains above the organizational level, such as
   TLDs (Top Level Domains).  These types of domains (which are not all
   at the top level of the DNS tree) can be collectively referred to as
   Public Suffix Domains (PSDs).  For the subset of PSDs that require
   DMARC usage, this memo describes an extension to DMARC to enable
   DMARC functionality for such domains.

Status of This Memo

   This Internet-Draft is submitted in full conformance with the
   provisions of BCP 78 and BCP 79.

   Internet-Drafts are working documents of the Internet Engineering
   Task Force (IETF).  Note that other groups may also distribute
   working documents as Internet-Drafts.  The list of current Internet-
   Drafts is at https://datatracker.ietf.org/drafts/current/.

   Internet-Drafts are draft documents valid for a maximum of six months
   and may be updated, replaced, or obsoleted by other documents at any
   time.  It is inappropriate to use Internet-Drafts as reference
   material or to cite them other than as "work in progress."

   This Internet-Draft will expire on May 25, 2019.

Kitterman                 Expires May 25, 2019                  [Page 1]
Internet-Draft                  PSD DMARC                  November 2018

Copyright Notice

   Copyright (c) 2018 IETF Trust and the persons identified as the
   document authors.  All rights reserved.

   This document is subject to BCP 78 and the IETF Trust's Legal
   Provisions Relating to IETF Documents
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   publication of this document.  Please review these documents
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   described in the Simplified BSD License.

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
   2.  Terminology and Definitions . . . . . . . . . . . . . . . . .   4
     2.1.  Conventions Used in This Document . . . . . . . . . . . .   4
     2.2.  Public Suffix Domain (PSD)  . . . . . . . . . . . . . . .   4
     2.3.  Longest PSD . . . . . . . . . . . . . . . . . . . . . . .   4
     2.4.  Public Suffix Operator (PSO)  . . . . . . . . . . . . . .   4
     2.5.  PSO Controlled Domain Names . . . . . . . . . . . . . . .   5
     2.6.  Non-existent Domains  . . . . . . . . . . . . . . . . . .   5
   3.  PSD DMARC Updates to DMARC Requirements . . . . . . . . . . .   5
     3.1.  General Updates . . . . . . . . . . . . . . . . . . . . .   5
     3.2.  Section 6.1 DMARC Policy Record . . . . . . . . . . . . .   5
     3.3.  Section 6.5.  Domain Owner Actions  . . . . . . . . . . .   5
     3.4.  Section 6.6.3.  Policy Discovery  . . . . . . . . . . . .   5
     3.5.  Section 7.  DMARC Feedback  . . . . . . . . . . . . . . .   6
   4.  Privacy Considerations  . . . . . . . . . . . . . . . . . . .   6
     4.1.  Feedback leakage  . . . . . . . . . . . . . . . . . . . .   6
   5.  Security Considerations . . . . . . . . . . . . . . . . . . .   7
   6.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .   7
     6.1.  DMARC Public Suffix Domain (PSD)                 Registry   7
   7.  References  . . . . . . . . . . . . . . . . . . . . . . . . .   8
     7.1.  Normative References  . . . . . . . . . . . . . . . . . .   8
     7.2.  Informative References  . . . . . . . . . . . . . . . . .   8
   Acknowledgements  . . . . . . . . . . . . . . . . . . . . . . . .   8
   Author's Address  . . . . . . . . . . . . . . . . . . . . . . . .   9

1.  Introduction

   DMARC [RFC7489] provides a mechanism for publishing organizational
   policy information to email receivers.  DMARC [RFC7489] allows policy
   to be specified for both individual domains and sets of domains
   within a single organization.  For domains above the organizational

Kitterman                 Expires May 25, 2019                  [Page 2]
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