Network Working Group Y. Shafranovich
Internet-Draft SolidMatrix Technologies, Inc.
Expires: November 29, 2007 J. Levine
P. Hoffman
Domain Assurance Council
May 28, 2007
An Extensible Format for Email Feedback Reports
draft-shafranovich-feedback-report-02.txt
Status of this Memo
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This Internet-Draft will expire on November 29, 2007.
Copyright Notice
Copyright (C) The IETF Trust (2007).
Abstract
This document defines an extensible format and MIME type that may be
used by network 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.
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Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . 3
2. Intent . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
3. Requirements . . . . . . . . . . . . . . . . . . . . . . . . . 4
4. Format of Email Feedback Reports . . . . . . . . . . . . . . . 4
5. Format of 'message/feedback-report' Content Type . . . . . . . 5
5.1. Required Fields . . . . . . . . . . . . . . . . . . . . . 5
5.2. Optional Fields Appearing Once . . . . . . . . . . . . . . 6
5.3. Optional Fields Appearing Multiple Times . . . . . . . . . 6
6. MIME Type Registration of message/feedback-report . . . . . . 7
7. Extensibility . . . . . . . . . . . . . . . . . . . . . . . . 8
8. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 8
8.1. Initial Values for the Header Names Registry . . . . . . . 9
8.2. Initial values for the "Feedback-Type" registry . . . . . 11
9. Security Considerations . . . . . . . . . . . . . . . . . . . 11
10. Acknowledgments . . . . . . . . . . . . . . . . . . . . . . . 11
11. References . . . . . . . . . . . . . . . . . . . . . . . . . . 12
11.1. Normative References . . . . . . . . . . . . . . . . . . . 12
11.2. Informative References . . . . . . . . . . . . . . . . . . 12
Appendix A. Appendix A - Sample Feedback Reports . . . . . . . . 13
A.1. Simple Report for Email Abuse without Optional Headers . . 13
A.2. Opt-Out Report without Message Body . . . . . . . . . . . 15
A.3. Full Report for Email Abuse with All Headers . . . . . . . 16
Appendix B. Status of This Document [To Be Removed Upon
Publication] . . . . . . . . . . . . . . . . . . . . 17
B.1. Discussion Venue . . . . . . . . . . . . . . . . . . . . . 17
B.2. Document Repository and Public Website . . . . . . . . . . 17
B.3. Document History . . . . . . . . . . . . . . . . . . . . . 17
B.4. Outstanding Issues . . . . . . . . . . . . . . . . . . . . 19
Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . . 19
Intellectual Property and Copyright Statements . . . . . . . . . . 21
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1. Introduction
As the spam problem continues to expand and potential solutions
evolve, network operators are increasingly exchanging abuse reports
among themselves and other parties. However, different operators
have defined their own formats, and thus the receivers of these
reports are forced to write custom software to interpret each. In
addition, many operators use various other report formats to provide
non-abuse-related feedback about processed email. This memo seeks to
define a standard extensible format and the "message/feedback-report"
MIME type for these reports in accordance with RFC 2048 [RFC2048].
This format and content type is intended to be used within the scope
of the framework of the "multipart/report" content type defined in
RFC 3462 [RFC3462]. While there have been previous work in this
area([STRADS_BCP] and [ASRG_ABUSE]), none of them have yet been
sucessful. It is hoped that this document will have a better fate.
This format is intended primarily as an Abuse Reporting Format (ARF)
for reporting email abuse but also includes support for direct
feedback via end user mail clients, reports of some types of virus
activity, and some similar issues.
This document only defines the format and content type to be used for
these reports. Determination of where these reports should be sent,
how trust among report generators and report recipients is
established, and reports related to more than one message are outside
the scope of this document. It is assumed that best practices will
evolve over time, and will be codified in future documents.
The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
"SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this
document are to be interpreted as described in RFC 2119 [RFC2119].
2. Intent
The reports defined in this document are intended for several
purposes:
o To inform ISPs about email abuse originating from or related to
their networks
o To inform email service providers or other primarily outbound
senders that there may be issues regarding their mail. These
issues include (but are not limited to) reports that the mail may
be considered to be "spam" by a recipient of the message.
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o To inform email service provides about opt-out requests
o To advise providers that certify or otherwise make assertions
about mail of recipient disagreement with the assertions.
Please note that while the parent "multipart/report" content type
defined in RFC 3462 is used for all kinds of administrative messages,
this format is intended specifically for communications among
providers regarding email abuse and related issues, and SHOULD NOT be
used for other reports.
3. Requirements
The following requirements are necessary for feedback reports (the
actual standard is defined in the next sections) :
o They must be both human and machine readable
o A copy of the original email message (body and headers) or the
message headers must be enclosed in order to allow the receiver to
properly handle the report.
o The machine readable section must provide ability for the report
generators to share metadata with receivers,
o The format must be extensible.
4. Format of Email Feedback Reports
To satisfy the requirements, an email feedback report is defined as a
MIME message with a top level MIME content type of "multipart/report"
(as defined in RFC 3462). The following apply:
a. The "report-type" parameter of "multipart/report" type is set to
"feedback-report"
b. The first MIME part of the message contains a human readable
description of the report and MUST be included.
c. The second MIME part of the message is a machine-readable section
with the content type of "message/feedback-report" (defined later
on in this document) and MUST be included. This section is
intended to convey metadata about the report in question that may
not be readily available from the included email message itself.
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d. The third MIME part of the message contains either a full copy of
the original message with a MIME content type of "message/rfc822"
(as defined in RFC 2046 [RFC2046]) OR a copy of the headers from
the original message with MIME content type of "text/
rfc822-headers" (as defined in RFC 3462). This part MUST be
included (unlike RFC 3462). While some operators may choose to
modify or redact this portion for privacy or legal reasons, it is
RECOMMENDED that the entire original email message be included
without any modification.
e. Each feedback report MUST be related to only a SINGLE email
message. Summary and aggregate formats are outside the scope of
this specification.
f. The subject line of the feedback report SHOULD be the same as the
included email message and MAY include only the standard
forwarding prefix used by MUAs such as "FW:". (Many smaller
operators using MUAs for abuse handling rely on the subject lines
for processing.)
5. Format of 'message/feedback-report' Content Type
This content type provides a machine-readable section intended to let
the report generator convey metadata to the report receiver. The
intent of this section is to convey information which may not be
obvious or may not be easily extracted from the original email
message or headers.
The body of this content type consists of multiple "fields" formatted
according to the ABNF of RFC 822 [RFC0822] header "fields". This
section defines the initial set of fields provided by this
specification. Additional fields may be registered according to the
procedure described later on in this document. Altough these fields
have a syntax similar to those of mail message headers, they are
semantically distinct; hence they SHOULD NOT be repeated in the
header area of the message containing the report. Note that these
fields represent information that the receiver is asserting about the
report in question, but are not necessarily verifiable. Report
receivers MUST NOT assume that these assertions are always accurate.
5.1. Required Fields
The following header fields are REQUIRED and MUST only appear once:
o "Feedback-Type:" - contains the type of feedback report (as
defined in the corresponding IANA registry). This is intended to
let report generators distinguish among different types of
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reports.
o "User-Agent:" - indicates the name and version of the software
program that generated the report. The format of this field MUST
follow section 14.43 of RFC 2616 [RFC2616]. This field is for
documentation only; there is no registry of user agent names or
versions, and report receivers SHOULD NOT expect user agent names
to belong to a known set.
o "Version" - indicates the version of specification that the report
generator is using to generate the report. The version number in
this specification is set to "0.1".
5.2. Optional Fields Appearing Once
The following header fields are OPTIONAL and MUST NOT appear more
than once:
o "Original-Mail-From:" - copy of the email address used in the MAIL
FROM portion of the original SMTP transaction. The format of this
field is defined in section 4.1.1.2 of RFC 2821 [RFC2821].
o "Original-Rcpt-To:" - copy of the email address used in the RCPT
TO portion of the original SMTP transaction. The format of this
field is defined in section 4.1.1.3 of RFC 2821.
o "Received-Date:" - indicates the date the original message was
received by recipient system's MTA. This field MUST BE formatted
as per section 3.3 of RFC 2822 [RFC2822].
o "Source-IP:" - contains an IPv4 or IPv6 address of the MTA from
which the original message was received. IPv4 addresses are to be
formatted in dot-decimal notation as currently used by the
community. IPv6 addresses MUST BE formatted as per section 2.2 of
RFC 2373 [RFC2373].
5.3. Optional Fields Appearing Multiple Times
The following set of header fields are OPTIONAL and MAY appear more
than once:
o "Authentication-Results:" - indicates the result of an
authentication check run by the report generator. The format of
this field is is defined in draft-kucherawy-sender-auth-header
[AUTH-HEADER]. Report receivers should note that this field only
indicates an assertion made by the report generator.
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o "Reported-Domain:" - indicates a domain name that the report
generator believes to be relevant to the report. Domain format is
defined in section 2.3.1 of RFC 1035 [RFC1035].
o "Reported-URI:" - indicates a URI that the report generator
believes to be relevant to the report. URI format is defined in
RFC 2396 [RFC2396].
o "Removal-Recipient:" - indicates the email address to be removed
from the mailing list (MUST only be used with "opt-out" and "opt-
out-list" types). The format of this field is defined in section
3.4.1 of RFC 2822.
6. MIME Type Registration of message/feedback-report
This section provides the media type registration application (as per
RFC 2048 [RFC2048].
To: ietf-types@iana.org
Subject: Registration of MIME media types message/feedback-report
MIME media type name: message
MIME subtype name: feedback-report
Required parameters: none
Optional parameters: none
Encoding considerations:
"7bit" encoding is sufficient and MUST be used to maintain
readability when viewed by non-MIME mail readers.
Security considerations:
See the "Security Considerations" of this document.
Interoperability considerations: implementors MUST ignore any fields
they do not support
Published specification: this document
Applications which use this media type: Abuse helpdesk software for
ISPs, mail service bureaus, mail certifiers, and similar
organizations
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Additional information:
Magic number(s): none
File extension(s): none
Macintosh File Type Code(s): none
Person and email address to contact for further information:
Yakov Shafranovich <ietf@shaftek.org>
Intended usage: COMMON
Author/Change controller: IESG
7. Extensibility
Like many other formats and protocols, this format may need to be
extended over time to fit the ever changing landscape of the
Internet. Therefore, extensibility is provided via two IANA
registries: one for feedback types and a second for header fields.
The feedback type registry is to be used in conjunction with the
"Feedback-Type" field above. The header name registry is intended
for registration of new metadata fields to be used in the machine
readable portion (part 2) of this format. Please note that version
numbers do not change with new field registrations unless a new
specification of this format is published. Also note that all new
field registrations can only registered as OPTIONAL fields. Any new
required fields REQUIRE a new version of this specification to be
published.
In order to encourage extensibility and interoperability of this
format, implementors MUST ignore any fields they do not support.
8. IANA Considerations
IANA is requested to register MIME type "message/feedback-report"
using the application provided in this document and setup two
registries: one for header field names and a second for "Feedback-
Type" values. This section contains the templates used for
registration of new entries in these registries and initial values.
New registrations to these two registries MUST have approval by a
Designated Expert in accordance with the Expert Review guidelines as
described in RFC 2434 [RFC2434] (the expert should be appointed by
the Area Directors of the Applications Area). Any new field
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registered is considered OPTIONAL unless a new version of this
specification is published.
For the header name registry, the following MUST be provided in order
to register a new header field name:
1. Name of the field being registered
2. Short description of the field
3. Whether the field can appear more than once
4. Which "Feedback-Type" types does this field apply to (or "any")
5. The RFC number (or Internet draft name) in which this header is
registered
If the header field being registered requires its own IANA registry,
than the appropriate registry MUST be properly defined.
For the feedback type registry, the following MUST be provided in
order to register a new header field name:
1. Name of the feedback type being registered
2. Short description
3. The RFC number (or Internet draft name) in which this feedback
type is registered
8.1. Initial Values for the Header Names Registry
The data below are populated from this document. The RFC number used
for registration of these values is this document.
Field Name: Authentication-Results
Description: results of authentication check
Multiple Appearances: Yes
Related "Feedback-Type": any
Field Name: Feedback-Type
Description: type of feedback report
Multiple Appearances: No
Related "Feedback-Type": N/A
Field Name: Original-Mail-From
Description: email address used in the MAIL FROM portion of the
original SMTP transaction
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Multiple Appearances: No
Related "Feedback-Type": any
Field Name: Original-Rcpt-To
Description: copy of the email address used in the RCPT TO portion of
the original SMTP transaction
Multiple Appearances: No
Related "Feedback-Type": any
Field Name: Received-Date
Description: date the original message was received
Multiple Appearances: No
Related "Feedback-Type": any
Field Name: Reported-Domain
Description: relevant domain name
Multiple Appearances: Yes
Related "Feedback-Type": any
Field Name: Reported-URI
Description: relevant URI
Multiple Appearances: Yes
Related "Feedback-Type": any
Field Name: Removal-Recipient
Description: email address to be removed from the mailing list
Multiple Appearances: Yes
Related "Feedback-Type": opt-out, opt-out-list
Field Name: Source-IP
Description: IPv4 or IPv6 address from which the original message was
received
Multiple Appearances: No
Related "Feedback-Type": any
Field Name: User-Agent
Description: name and version of the program used
Multiple Appearances: No
Related "Feedback-Type": any
Field Name: Version
Description: version of specification used
Multiple Appearances: No
Related "Feedback-Type": any
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8.2. Initial values for the "Feedback-Type" registry
The initial names and descriptions are provided below. The RFC
number used for registration of these values is this document.
o abuse - spam or some other kind of email abuse
o fraud - indicates some kind of fraud or phishing activity.
o miscategorized - indicates that the content categorization applied
in connection with a certification or reputation system was
incorrect
o not-spam - indicates that a message that was tagged or categorized
as spam (such as by an ISP) is not spam
o opt-out - a request to opt out from ALL mailing lists from this
provider.
o opt-out-list - a request to opt out from THIS mailing list ONLY.
o virus - report of a virus found in the originating message
o other - any other feedback that doesn't fit into other types.
9. Security Considerations
All of the Security Considerations from RFC 3462 are inherited here.
This specification describes a report format. This document does not
say what a recipient of such a report must, should, or even may do
with any report in the format described here.
10. Acknowledgments
The authors would like to thank many of the members of the email
community who provided helpful comments and suggestions for this
document including many of the participants in ASRG, IETF and MAAWG
activities, and all of the members of the abuse-feedback-report
public mailing list.
11. References
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11.1. Normative References
[RFC1035] Mockapetris, P., "Domain names - implementation and
specification", STD 13, RFC 1035, November 1987.
[RFC2046] Freed, N. and N. Borenstein, "Multipurpose Internet Mail
Extensions (MIME) Part Two: Media Types", RFC 2046,
November 1996.
[RFC2119] Bradner, S., "Key words for use in RFCs to Indicate
Requirement Levels", BCP 14, RFC 2119, March 1997.
[RFC2373] Hinden, R. and S. Deering, "IP Version 6 Addressing
Architecture", RFC 2373, July 1998.
[RFC2616] Fielding, R., Gettys, J., Mogul, J., Frystyk, H.,
Masinter, L., Leach, P., and T. Berners-Lee, "Hypertext
Transfer Protocol -- HTTP/1.1", RFC 2616, June 1999.
[RFC2821] Klensin, J., "Simple Mail Transfer Protocol", RFC 2821,
April 2001.
[RFC2822] Resnick, P., "Internet Message Format", RFC 2822,
April 2001.
[RFC3462] Vaudreuil, G., "The Multipart/Report Content Type for the
Reporting of Mail System Administrative Messages",
RFC 3462, January 2003.
11.2. Informative References
[ASRG_ABUSE]
Anti-Spam Research Group (ASRG) of the Internet Research
Task Force (IRTF), "Abuse Reporting Standards Subgroup of
the ASRG", May 2005,
<http://asrg.sp.am/subgroups/abuse_reports.shtml>.
[]
Kucherawy, M., "Message Header for Indicating Sender
Authentication Status",
draft-kucherawy-sender-auth-header-04 (work in progress).
[RFC0822] Crocker, D., "Standard for the format of ARPA Internet
text messages", STD 11, RFC 822, August 1982.
[RFC2048] Freed, N., Klensin, J., and J. Postel, "Multipurpose
Internet Mail Extensions (MIME) Part Four: Registration
Procedures", BCP 13, RFC 2048, November 1996.
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[RFC2396] Berners-Lee, T., Fielding, R., and L. Masinter, "Uniform
Resource Identifiers (URI): Generic Syntax", RFC 2396,
August 1998.
[RFC2434] Narten, T. and H. Alvestrand, "Guidelines for Writing an
IANA Considerations Section in RFCs", BCP 26, RFC 2434,
October 1998.
[STRADS_BCP]
Crissman, G., "Proposed Spam Reporting BCP Document",
May 2005, <http://www.tmisnet.com/~strads/spam/bcp.html>.
Appendix A. Appendix A - Sample Feedback Reports
A.1. Simple Report for Email Abuse without Optional Headers
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From: <abusedesk@example.com>
Date: Thu, 8 Mar 2005 17:40:36 EDT
Subject: FW: Earn money
To: <abuse@example.net>
MIME-Version: 1.0
Content-Type: multipart/report; report-type=feedback-report;
boundary="part1_13d.2e68ed54_boundary"
--part1_13d.2e68ed54_boundary
Content-Type: text/plain; charset="US-ASCII"
Content-Transfer-Encoding: 7bit
This is an email abuse report for an email message received from IP
10.67.41.167 on Thu, 8 Mar 2005 14:00:00 EDT. For more information
about this format please see http://www.mipassoc.org/arf/.
--part1_13d.2e68ed54_boundary
Content-Type: message/feedback-report
Feedback-Type: abuse
User-Agent: SomeGenerator/1.0
Version: 0.1
--part1_13d.2e68ed54_boundary
Content-Type: message/rfc822
Content-Disposition: inline
From: <somespammer@example.net>
Received: from mailserver.example.net
(mailserver.example.net [10.67.41.167])
by example.com with ESMTP id M63d4137594e46;
Thu, 08 Mar 2005 14:00:00 -0400
To: <Undisclosed Recipients>
Subject: Earn money
MIME-Version: 1.0
Content-type: text/plain
Message-ID: 8787KJKJ3K4J3K4J3K4J3.mail@example.net
Date: Thu, 02 Sep 2004 12:31:03 -0500
Spam Spam Spam
Spam Spam Spam
Spam Spam Spam
Spam Spam Spam
--part1_13d.2e68ed54_boundary--
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A.2. Opt-Out Report without Message Body
From: <abusedesk@example.com>
Date: Thu, 8 Mar 2005 17:40:36 EDT
Subject: FW: Earn money
To: <abuse@example.net>
MIME-Version: 1.0
Content-Type: multipart/report; report-type=feedback-report;
boundary="part1_13d.2e68ed54_boundary"
--part1_13d.2e68ed54_boundary
Content-Type: text/plain; charset="US-ASCII"
Content-Transfer-Encoding: 7bit
This is an opt-out report for an email message received from IP
10.67.41.167 on Thu, 8 Mar 2005 14:00:00 EDT. For more information
about this format please see http://www.mipassoc.org/arf/.
--part1_13d.2e68ed54_boundary
Content-Type: message/feedback-report
Feedback-Type: opt-out
User-Agent: SomeGenerator/1.0
Version: 0.1
Removal-Recipient: user@example.com
--part1_13d.2e68ed54_boundary
Content-Type: message/rfc822-headers
Content-Disposition: inline
From: <somespammer@example.net>
Received: from mailserver.example.net
(mailserver.example.net [10.67.41.167])
by example.com with ESMTP id M63d4137594e46;
Thu, 08 Mar 2005 14:00:00 -0400
To: <Undisclosed Recipients>
Subject: Earn money
MIME-Version: 1.0
Content-type: text/plain
Message-ID: 8787KJKJ3K4J3K4J3K4J3.mail@example.net
Date: Thu, 02 Sep 2004 12:31:03 -0500
--part1_13d.2e68ed54_boundary--
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A.3. Full Report for Email Abuse with All Headers
From: <abusedesk@example.com>
Date: Thu, 8 Mar 2005 17:40:36 EDT
Subject: FW: Earn money
To: <abuse@example.net>
MIME-Version: 1.0
Content-Type: multipart/report; report-type=feedback-report;
boundary="part1_13d.2e68ed54_boundary"
--part1_13d.2e68ed54_boundary
Content-Type: text/plain; charset="US-ASCII"
Content-Transfer-Encoding: 7bit
This is an email abuse report for an email message received from IP
10.67.41.167 on Thu, 8 Mar 2005 14:00:00 EDT. For more information
about this format please see http://www.mipassoc.org/arf/.
--part1_13d.2e68ed54_boundary
Content-Type: message/feedback-report
Feedback-Type: abuse
User-Agent: SomeGenerator/1.0
Version: 0.1
Original-Mail-From: <somespammer@example.net>
Original-Rcpt-To: <user@example.com>
Received-Date: Thu, 8 Mar 2005 14:00:00 EDT
Source-IP: 10.67.41.167
Authentication-Results: mail.example.com
smtp.mail=somespammer@example.com;
spf=fail
Reported-Domain: example.net
Reported-Uri: http://example.net/earn_money.html
Reported-Uri: mailto:user@example.com
Removal-Recipient: user@example.com
--part1_13d.2e68ed54_boundary
Content-Type: message/rfc822
Content-Disposition: inline
From: <somespammer@example.net>
Received: from mailserver.example.net (mailserver.example.net
[10.67.41.167]) by example.com with ESMTP id M63d4137594e46;
Thu, 08 Mar 2005 14:00:00 -0400
To: <Undisclosed Recipients>
Subject: Earn money
MIME-Version: 1.0
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Content-type: text/plain
Message-ID: 8787KJKJ3K4J3K4J3K4J3.mail@example.net
Date: Thu, 02 Sep 2004 12:31:03 -0500
Spam Spam Spam
Spam Spam Spam
Spam Spam Spam
Spam Spam Spam
--part1_13d.2e68ed54_boundary--
Appendix B. Status of This Document [To Be Removed Upon Publication]
B.1. Discussion Venue
Discussion about this document should be directed to the ABUSE-
FEEDBACK-REPORT mailing list
<http://mipassoc.org/mailman/listinfo/abuse-feedback-report> which is
also reachable via <mailto:abuse-feedback-report@mipassoc.org>. Of
course, comments directly to the authors are always welcome (you can
send them via email to <ietf@shaftek.org> and
<drafts@domain-assurance.org>).
B.2. Document Repository and Public Website
Copies of this and earlier versions including multiple formats can be
found at <http://www.shaftek.org/publications/drafts/abuse-report/>.
A public website regarding this draft and related efforts is located
at <http://mipassoc.org/arf/>.
B.3. Document History
Changes from draft-shafranovich-feedback-report-01-pre1 to
draft-shafranovich-feedback-report-01:
o Added an "Outstanding Issues" section.
o Minor spelling mistakes and clarifications.
o Added links to previous work and more examples.
o Added three new types: "fraud" for phishing, "opt-out-list" for a
single list opt out, and "other" as a catch-all.
Changes from draft-shafranovich-feedback-report-00 to
draft-shafranovich-feedback-report-01-pre1:
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Internet-Draft Format for Feedback Reports May 2007
o Changed the introduction section to clarify specific points that
are out of scope for this document
o Added pointers to a public mailing list for discussion and public
web page
o Clarified the intent section and added some extra points to it
o Added a reference to RFC 2119 and changed the document to comply
o Made it clear that the requirements section) is not the one
defining the standard
o Clarified the main format section to make all three parts
mandatory
o Changed section 4f regarding subject lines to mandate that subject
lines should be left intact. Removed the convention for subject
lines that was defined in the previous version
o Added text to the the machine readable section clarifying its
intent. Also added RFC 2119 references, reorganized fields,
indicated whether specific header fields can appear more than once
and provided references as to how they should be formatted.
o Removed "Original-Message-ID", "Authenticated-Domain:" and
"Authenticated-Domain-Method" from the draft including related
IANA registries. Added "Version", "User-Agent", Original-Mail-
From", "Original-Rcpt-To", "Reported-Uri", "Reported-Domain" and
"Authentication-Results".
o Example has been updated to reflect new headers.
o Added a new section on extensibility and changed the IANA section
to reflect that.
Changes from draft-shafranovich-abuse-report-00 to
draft-shafranovich-feedback-report-00:
o Name of the format and report changed to 'feedback-report'
o Minor spelling corrections
o Added authentication headers and registry
o Added feedback-type header and registry.
Changes from draft-shafranovich-feedback-report-00 to
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Internet-Draft Format for Feedback Reports May 2007
draft-shafranovich-feedback-report-01:
o None significant (just a freshening)
Changes from draft-shafranovich-feedback-report-01 to
draft-shafranovich-feedback-report-02:
o Much editorial cleanup
o Added John Levine and Paul Hoffman as co-authors
o Made the line lengths in Appendix A appropriate for RFCs
o Switched to symbolic names for references
o Reduced duplication of reference calls
o Removed text that specified the type of RFC and approval type that
is expected
o Removed the requirement for an RFC to update the IANA registries;
both are now designated expert approval only
o Added two new categories to the initial values for the "Feedback-
Type" registry: miscategorized and not-spam
o Beefed up the Security Considerations section a bit
o Removed resolved questions from outstanding issues
B.4. Outstanding Issues
Here is a list of some outstanding issues for this document that have
not been finalized:
o Whether encoding of the machine readable part should be limited to
7-bit
o Whether there is a need for both "opt-out" and "opt-out-list", and
whether this format should be used for opt-outs at all.
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Internet-Draft Format for Feedback Reports May 2007
Authors' Addresses
Yakov Shafranovich
SolidMatrix Technologies, Inc.
Email: ietf@shaftek.org
URI: http://www.shaftek.org
John Levine
Domain Assurance Council
Email: john.levine@domain-assurance.org
Paul Hoffman
Domain Assurance Council
Email: paul.hoffman@domain-assurance.org
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Internet-Draft Format for Feedback Reports May 2007
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