Individual submission M. Kucherawy
Internet-Draft Cloudmark, Inc.
Updates: 5451 (if approved) January 3, 2012
Intended status: Standards Track
Expires: July 6, 2012
Authentication-Results Registration Update for SPF Results
draft-kucherawy-authres-spf-erratum-00
Abstract
This memo updates the registry of authentication method results in
Authentication-Results: message header fields, correcting a
discontinuity between the original registry creation and the SPF
specification.
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 July 6, 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
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 July 6, 2012 [Page 1]
Internet-Draft Auth-Results SPF Erratum January 2012
Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . 3
2. New 'fail' definition . . . . . . . . . . . . . . . . . . . . . 3
3. IANA Considerations . . . . . . . . . . . . . . . . . . . . . . 3
3.1. Addition of 'Status' Columns . . . . . . . . . . . . . . . 3
3.2. Update to Result Names . . . . . . . . . . . . . . . . . . 3
4. Security Considerations . . . . . . . . . . . . . . . . . . . . 4
5. References . . . . . . . . . . . . . . . . . . . . . . . . . . 4
5.1. Normative References . . . . . . . . . . . . . . . . . . . 4
5.2. Informative References . . . . . . . . . . . . . . . . . . 4
Appendix A. Acknowledgements . . . . . . . . . . . . . . . . . . . 4
Kucherawy Expires July 6, 2012 [Page 2]
Internet-Draft Auth-Results SPF Erratum January 2012
1. Introduction
[AUTHRES] defined a new header field for electronic mail messages
that presents the results of a message authentication effort in a
machine-readable format. That Request For Comments created a
registry of results for a few message authentication mechanisms, one
of which was the Sender Policy Framework [SPF]. The registry
contains one entry that is inconsistent with the latter
specification, which was noted in an erratum filed with the RFC
Editor. This memo updates the IANA registries accordingly.
2. New 'fail' definition
The new "fail" result, replacing the existing "hardfail" result for
[SPF] (and thus also for [SENDER-ID]) has the same definition for
"hardfail" that was used in Section 2.4.2 of [AUTHRES], namely:
This client is explicitly not authorized to inject or relay mail
using the sender's DNS domain.
3. IANA Considerations
This section enumerates requested actions of IANA, per [IANA].
3.1. Addition of 'Status' Columns
IANA is requested to amend the Email Authentication Methods and Email
Authentication Result Names registries, both in the Email
Authentication Parameters group, by adding to each a column called
"Status" that will indicate for each entry its current standards
status. Legal values for these columns are:
active: The entry is in current use.
deprecated: The entry is no longer in current use.
New registrations to either table MUST specify one of these values.
All exisitng entries, except as specified below, are to be noted as
"active" as of publication of this memo.
3.2. Update to Result Names
[AUTHRES] listed "hardfail" as the result to be used when a message
fails an [SPF] evaluation. However, this latter specification used
the string "fail" to denote such failures.
Therefore, IANA is requested to mark "hardfail" in the Email
Kucherawy Expires July 6, 2012 [Page 3]
Internet-Draft Auth-Results SPF Erratum January 2012
Authentication Result Names registry as "deprecated", and amend the
"fail" entry as follows:
Code: fail
Defined: [AUTHRES]
Auth Method: spf, sender-id
Meaning: [this memo] Section 2
Status: active
4. Security Considerations
This memo corrects a registry error. It is possible that older
implementations will not recognize or use the corrected entry. Thus,
cautious implementers may wish to support both result strings for
some period of time. However, it is known that some implementations
are already using the SPF-defined result string.
5. References
5.1. Normative References
[AUTHRES] Kucherawy, M., "Message Header Field for Indicating
Message Authentication Status", RFC 5451, April 2009.
[SENDER-ID] Lyon, J. and M. Wong, "Sender ID: Authenticating
E-Mail", RFC 4406, April 2006.
[SPF] Wong, M. and W. Schlitt, "Sender Policy Framework (SPF)
for Authorizing Use of Domains in E-Mail, Version 1",
RFC 4408, April 2006.
5.2. Informative References
[IANA] Narten, T. and H. Alvestrand, "Guidelines for Writing an
IANA Considerations Section in RFCs", BCP 26, RFC 5226,
May 2008.
Appendix A. Acknowledgements
The author wishes to acknowledge the following for their review and
constructive criticism of this proposal: (names)
Kucherawy Expires July 6, 2012 [Page 4]
Internet-Draft Auth-Results SPF Erratum January 2012
Author's Address
Murray S. Kucherawy
Cloudmark, Inc.
128 King St., 2nd Floor
San Francisco, CA 94107
US
Phone: +1 415 946 3800
EMail: msk@cloudmark.com
Kucherawy Expires July 6, 2012 [Page 5]
