Email Authentication Status Codes
draft-ietf-appsawg-email-auth-codes-00
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Network Working Group M. Kucherawy
Internet-Draft May 23, 2014
Intended status: Informational
Expires: November 24, 2014
Email Authentication Status Codes
draft-ietf-appsawg-email-auth-codes-00
Abstract
There is at present no way to return a status code to an email client
that indicates a message is being rejected or deferred specifically
because of email authentication failures. This document registers
codes for this purpose.
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 http://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 November 24, 2014.
Copyright Notice
Copyright (c) 2014 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
(http://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.
Kucherawy Expires November 24, 2014 [Page 1]
Internet-Draft Email Auth Status Codes May 2014
Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . 3
2. New Status Codes . . . . . . . . . . . . . . . . . . . . . . . 3
2.1. DKIM Failures Code . . . . . . . . . . . . . . . . . . . . 3
2.2. SPF Failures Code . . . . . . . . . . . . . . . . . . . . . 4
2.3. Reverse DNS Failure Code . . . . . . . . . . . . . . . . . 4
3. General Considerations . . . . . . . . . . . . . . . . . . . . 4
4. Security Considerations . . . . . . . . . . . . . . . . . . . . 4
5. IANA Considerations . . . . . . . . . . . . . . . . . . . . . . 5
6. Normative References . . . . . . . . . . . . . . . . . . . . . 5
Appendix A. Acknowledgments . . . . . . . . . . . . . . . . . . . 5
Kucherawy Expires November 24, 2014 [Page 2]
Internet-Draft Email Auth Status Codes May 2014
1. Introduction
[RFC3463] introduced Enhanced Mail System Status Codes, and [RFC5248]
created an IANA registry for these.
[RFC6376] and [RFC7208] introduced, respectively, DomainKeys
Identified Mail and Sender Policy Framework, two protocols for
conducting email authentication. Another common email acceptance
test is the reverse Domain Name System check on an email client's IP
address, as described in Section 3 of [RFC7001].
The current set of enhanced status codes does not include any code
for indicating that a message is being rejected or deferred due to
local policy reasons related to either of these two mechanisms. This
document introduces enhanced status codes for reporting those cases
to clients.
2. New Status Codes
The following new status codes are defined:
2.1. DKIM Failures Code
Code: X.7.19
Sample Text: No valid DKIM signature found
Associated basic status code: 5
Description: This status code is returned when a message
did not contain a valid DKIM signature,
contrary to local policy requirements.
Reference: [this document]
Submitter: M. Kucherawy
Change controller: IESG
Code: X.7.20
Sample Text: No valid author DKIM signature found
Associated basic status code: 5
Description: This status code is returned when a message
did not contain a valid DKIM signature
matching the domain(s) found in the From
header field, contrary to local policy
requirements.
Reference: [this document]
Submitter: M. Kucherawy
Change controller: IESG
Kucherawy Expires November 24, 2014 [Page 3]
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