Extensions to DKIM for Failure Reporting
draft-ietf-marf-dkim-reporting-10

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MARF Working Group                                          M. Kucherawy
Internet-Draft                                                 Cloudmark
Intended status: Standards Track                       February 12, 2012
Expires: August 15, 2012

                Extensions to DKIM for Failure Reporting
                   draft-ietf-marf-dkim-reporting-10

Abstract

   This memo presents extensions to the DomainKeys Identified Mail
   (DKIM) specification to allow for detailed reporting of message
   authentication failures in an on-demand fashion.

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
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   This Internet-Draft will expire on August 15, 2012.

Copyright Notice

   Copyright (c) 2012 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
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   described in the Simplified BSD License.

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Table of Contents

   1.  Introduction . . . . . . . . . . . . . . . . . . . . . . . . .  3
   2.  Definitions  . . . . . . . . . . . . . . . . . . . . . . . . .  4
     2.1.  Keywords . . . . . . . . . . . . . . . . . . . . . . . . .  4
     2.2.  Imported Definitions . . . . . . . . . . . . . . . . . . .  4
     2.3.  Other Definitions  . . . . . . . . . . . . . . . . . . . .  4
   3.  Optional Reporting for DKIM  . . . . . . . . . . . . . . . . .  5
     3.1.  Extension DKIM Signature Tag . . . . . . . . . . . . . . .  5
     3.2.  DKIM Reporting TXT Record  . . . . . . . . . . . . . . . .  5
     3.3.  DKIM Reporting Algorithm . . . . . . . . . . . . . . . . .  6
   4.  Optional Reporting Address for DKIM-ADSP . . . . . . . . . . .  9
   5.  Requested Reports  . . . . . . . . . . . . . . . . . . . . . . 11
     5.1.  Requested Reports for DKIM Failures  . . . . . . . . . . . 11
     5.2.  Requested Reports for DKIM ADSP Failures . . . . . . . . . 11
   6.  Report Generation  . . . . . . . . . . . . . . . . . . . . . . 13
     6.1.  Report Format  . . . . . . . . . . . . . . . . . . . . . . 13
     6.2.  Other Guidance . . . . . . . . . . . . . . . . . . . . . . 13
   7.  IANA Considerations  . . . . . . . . . . . . . . . . . . . . . 14
     7.1.  DKIM Signature Tag Registration  . . . . . . . . . . . . . 14
     7.2.  DKIM ADSP Tag Registration . . . . . . . . . . . . . . . . 14
     7.3.  DKIM Reporting Tag Registry  . . . . . . . . . . . . . . . 14
   8.  Security Considerations  . . . . . . . . . . . . . . . . . . . 16
     8.1.  Inherited Considerations . . . . . . . . . . . . . . . . . 16
     8.2.  Deliberate Misuse  . . . . . . . . . . . . . . . . . . . . 16
   9.  References . . . . . . . . . . . . . . . . . . . . . . . . . . 17
     9.1.  Normative References . . . . . . . . . . . . . . . . . . . 17
     9.2.  Informative References . . . . . . . . . . . . . . . . . . 18
   Appendix A.  Acknowledgements  . . . . . . . . . . . . . . . . . . 19
   Appendix B.  Examples  . . . . . . . . . . . . . . . . . . . . . . 20
     B.1.  Example Use of DKIM Signature Extension Tag  . . . . . . . 20
     B.2.  Example DKIM Reporting TXT Record  . . . . . . . . . . . . 20
     B.3.  Example Use of DKIM ADSP Extension Tags  . . . . . . . . . 21
   Author's Address . . . . . . . . . . . . . . . . . . . . . . . . . 22

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1.  Introduction

   [DKIM] introduced a mechanism for message signing and authentication.
   It uses digital signing to associate a domain name with a message in
   a reliable (i.e. not forgeable) manner.  The output is a verified
   domain name that can then be subjected to some sort of evaluation
   process (e.g., advertised sender policy, comparison to a known-good