Experimental DMARC Extension For Public Suffix Domains
draft-ietf-dmarc-psd-11

The information below is for an old version of the document
Document Type Active Internet-Draft (dmarc WG)
Authors Scott Kitterman  , Tim Wicinski 
Last updated 2021-04-05 (latest revision 2021-03-19)
Replaces draft-kitterman-dmarc-psd
Stream Internet Engineering Task Force (IETF)
Formats pdf htmlized (tools) htmlized bibtex
Reviews
Stream WG state Submitted to IESG for Publication
Document shepherd Alexey Melnikov
Shepherd write-up Show (last changed 2021-03-22)
IESG IESG state Waiting for AD Go-Ahead::Revised I-D Needed
Consensus Boilerplate Yes
Telechat date
Responsible AD Murray Kucherawy
Send notices to (None)
IANA IANA review state IANA OK - Actions Needed
IANA expert review state Expert Reviews OK
Network Working Group                                       S. Kitterman
Internet-Draft                                    fTLD Registry Services
Intended status: Experimental                           T. Wicinski, Ed.
Expires: September 20, 2021                               March 19, 2021

         Experimental DMARC Extension For Public Suffix Domains
                        draft-ietf-dmarc-psd-11

Abstract

   Domain-based Message Authentication, Reporting, and Conformance
   (DMARC) 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.

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 September 20, 2021.

Kitterman & Wicinski   Expires September 20, 2021               [Page 1]
Internet-Draft                  PSD DMARC                     March 2021

Copyright Notice

   Copyright (c) 2021 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
   (https://trustee.ietf.org/license-info) in effect on the date of
   publication of this document.  Please review these documents
   carefully, as they describe your rights and restrictions with respect
   to this document.  Code Components extracted from this document must
   include Simplified BSD License text as described in Section 4.e of
   the Trust Legal Provisions and are provided without warranty as
   described in the Simplified BSD License.

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   3
     1.1.  Example . . . . . . . . . . . . . . . . . . . . . . . . .   3
     1.2.  Discussion  . . . . . . . . . . . . . . . . . . . . . . .   4
   2.  Terminology and Definitions . . . . . . . . . . . . . . . . .   5
     2.1.  Conventions Used in This Document . . . . . . . . . . . .   5
     2.2.  Public Suffix Domain (PSD)  . . . . . . . . . . . . . . .   5
     2.3.  Organizational Domain . . . . . . . . . . . . . . . . . .   6
     2.4.  Longest PSD . . . . . . . . . . . . . . . . . . . . . . .   6
     2.5.  Public Suffix Operator (PSO)  . . . . . . . . . . . . . .   6
     2.6.  PSO Controlled Domain Names . . . . . . . . . . . . . . .   6
     2.7.  Non-existent Domains  . . . . . . . . . . . . . . . . . .   6
   3.  PSD DMARC Updates to DMARC Requirements . . . . . . . . . . .   6
     3.1.  General Updates . . . . . . . . . . . . . . . . . . . . .   6
     3.2.  Changes in Section 6.3 "General Record Format"  . . . . .   7
     3.3.  Changes in Section 6.5 "Domain Owner Actions" . . . . . .   7
     3.4.  Changes in Section 6.6.1 "Extract Author Domain"  . . . .   7
     3.5.  Changes in Section 6.6.3 "Policy Discovery" . . . . . . .   8
     3.6.  Changes in Section 7 "DMARC Feedback" . . . . . . . . . .   8
   4.  Privacy Considerations  . . . . . . . . . . . . . . . . . . .   8
     4.1.  Feedback leakage  . . . . . . . . . . . . . . . . . . . .   8
   5.  Security Considerations . . . . . . . . . . . . . . . . . . .  10
   6.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .  10
     6.1.  Subdomain Policy Tag  . . . . . . . . . . . . . . . . . .  10
   7.  References  . . . . . . . . . . . . . . . . . . . . . . . . .  10
     7.1.  Normative References  . . . . . . . . . . . . . . . . . .  10
     7.2.  Informative References  . . . . . . . . . . . . . . . . .  11
   Appendix A.  PSD DMARC Privacy Concern Mitigation Experiment  . .  12
   Appendix B.  DMARC PSD Registry Examples  . . . . . . . . . . . .  12
     B.1.  DMARC PSD DNS Query Service . . . . . . . . . . . . . . .  12
     B.2.  DMARC Public Suffix Domain (PSD) Registry . . . . . . . .  12
Show full document text