DMARC Aggregate Reporting
draft-ietf-dmarc-aggregate-reporting-00

Document Type Active Internet-Draft (dmarc WG)
Author Alex Brotman 
Last updated 2020-11-12
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DMARC                                                    A. Brotman (ed)
Internet-Draft                                             Comcast, Inc.
Obsoletes: 7489 (if approved)                          November 11, 2020
Intended status: Standards Track
Expires: May 15, 2021

                       DMARC Aggregate Reporting
                draft-ietf-dmarc-aggregate-reporting-00

Abstract

   DMARC allows for domain holders to request aggregate reports from
   receivers.  This report is an XML document, and contains extensible
   elements that allow for other types of data to be specified later.
   The aggregate reports can be submitted to the domain holder's
   specified destination as supported by the receiver.

   This document (along with others) obsoletes RFC7489.

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 15, 2021.

Copyright Notice

   Copyright (c) 2020 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

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   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  . . . . . . . . . . . . . . . . . . . . . . . .   2
     1.1.  Terminology . . . . . . . . . . . . . . . . . . . . . . .   2
   2.  DMARC Feedback  . . . . . . . . . . . . . . . . . . . . . . .   2
     2.1.  Verifying External Destinations . . . . . . . . . . . . .   3
     2.2.  Aggregate Reports . . . . . . . . . . . . . . . . . . . .   3
       2.2.1.  Transport . . . . . . . . . . . . . . . . . . . . . .   5
   3.  Security Considerations . . . . . . . . . . . . . . . . . . .   8
   4.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .   8
   5.  Appendix A. DMARC XML Schema  . . . . . . . . . . . . . . . .   8
   6.  References  . . . . . . . . . . . . . . . . . . . . . . . . .  13
     6.1.  Normative References  . . . . . . . . . . . . . . . . . .  13
     6.2.  Informative References  . . . . . . . . . . . . . . . . .  14
   Author's Address  . . . . . . . . . . . . . . . . . . . . . . . .  14

1.  Introduction

   A key component of DMARC is the ability for domain holders to request
   that receivers provide various types of reports.  These reports allow
   domain holders to have insight into which IP addresses are sending on
   their behalf, and some insight into whether or not the volume may be
   legitimate.  These reports expose information relating to the DMARC
   policy, as well as the outcome of SPF [RFC7208] & DKIM [RFC6376]
   validation.

1.1.  Terminology

   The keywords MUST, MUST NOT, REQUIRED, SHALL, SHALL NOT, SHOULD,
   SHOULD NOT, RECOMMENDED, MAY, and OPTIONAL, when they appear in this
   document, are to be interpreted as described in [RFC2119].

2.  DMARC Feedback

   Providing Domain Owners with visibility into how Mail Receivers
   implement and enforce the DMARC mechanism in the form of feedback is
   critical to establishing and maintaining accurate authentication
   deployments.  When Domain Owners can see what effect their policies
   and practices are having, they are better willing and able to use
   quarantine and reject policies.

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2.1.  Verifying External Destinations

   [<https://trac.ietf.org/trac/dmarc/ticket/76>]

2.2.  Aggregate Reports

   The DMARC aggregate feedback report is designed to provide Domain
   Owners with precise insight into:

   o  authentication results,

   o  corrective action that needs to be taken by Domain Owners, and

   o  the effect of Domain Owner DMARC policy on email streams processed
      by Mail Receivers.

   Aggregate DMARC feedback provides visibility into real-world email
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