An Extensible Format for Email Feedback Reports
RFC 5965
| Document | Type |
RFC - Proposed Standard
(August 2010; Errata)
Updated by RFC 6650
Was draft-ietf-marf-base (marf WG)
|
|
|---|---|---|---|
| Last updated | 2020-01-21 | ||
| Replaces | draft-shafranovich-feedback-report | ||
| Stream | IETF | ||
| Formats | plain text html pdf htmlized with errata bibtex | ||
| Stream | WG state | (None) | |
| Document shepherd | No shepherd assigned | ||
| IESG | IESG state | RFC 5965 (Proposed Standard) | |
| Consensus Boilerplate | Unknown | ||
| Telechat date | |||
| Responsible AD | Alexey Melnikov | ||
| Send notices to | ietf@cybernothing.org | ||
Internet Engineering Task Force (IETF) Y. Shafranovich
Request for Comments: 5965 ShafTek Enterprises
Category: Standards Track J. Levine
ISSN: 2070-1721 Taughannock Networks
M. Kucherawy
Cloudmark
August 2010
An Extensible Format for Email Feedback Reports
Abstract
This document defines an extensible format and MIME type that may be
used by mail operators to report feedback about received email to
other parties. This format is intended as a machine-readable
replacement for various existing report formats currently used in
Internet email.
Status of This Memo
This is an Internet Standards Track document.
This document is a product of the Internet Engineering Task Force
(IETF). It represents the consensus of the IETF community. It has
received public review and has been approved for publication by the
Internet Engineering Steering Group (IESG). Further information on
Internet Standards is available in Section 2 of RFC 5741.
Information about the current status of this document, any errata,
and how to provide feedback on it may be obtained at
http://www.rfc-editor.org/info/rfc5965.
Copyright Notice
Copyright (c) 2010 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.
Shafranovich, et al. Standards Track [Page 1]
RFC 5965 Format for Feedback Reports August 2010
Table of Contents
1. Introduction ....................................................3
1.1. Purpose ....................................................3
1.2. Requirements ...............................................4
1.3. Definitions ................................................4
1.3.1. General .............................................4
1.3.2. Email Specific ......................................4
2. Format of Email Feedback Reports ................................4
3. The 'message/feedback-report' Content Type ......................5
3.1. Required Fields ............................................6
3.2. Optional Fields Appearing Once .............................6
3.3. Optional Fields Appearing Multiple Times ...................7
3.4. Notes about URIs ...........................................8
3.5. Formal Definition ..........................................8
4. Handling Malformed Reports .....................................10
5. Transport Considerations .......................................10
6. Extensibility ..................................................10
7. IANA Considerations ............................................11
7.1. MIME Type Registration of 'message/feedback-report' .......11
7.2. Feedback Report Header Fields .............................12
7.3. Feedback Report Type Values ...............................15
8. Security Considerations ........................................17
8.1. Inherited from RFC 3462 ...................................17
8.2. Interpretation ............................................17
8.3. Attacks against Authentication Methods ....................17
8.4. Intentionally Malformed Reports ...........................18
8.5. Omitting Data from ARF Reports ............................18
8.6. Automatically Generated ARF Reports .......................18
8.7. Attached Malware ..........................................18
8.8. The User-Agent Field ......................................18
8.9. Malformed Messages ........................................19
9. References .....................................................19
9.1. Normative References ......................................19
9.2. Informative References ....................................20
Appendix A. Acknowledgements .....................................22
Appendix B. Sample Feedback Reports ..............................22
B.1. Simple Report for Email Abuse without Optional Headers ...22
B.2. Full Report for Email Abuse with All Headers .............23
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