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-
- CURRENT_MEETING_REPORT_
-
- Reported by Ned Freed/Innosoft International
-
- Minutes of the Notifications and Acknowledgements Requirements
- Working Group (NOTARY)
-
- The NOTARY Working Group met on 8 December at the 31st IETF.
-
-
- Agenda
-
- o Agenda approval
-
- o Document bashing, multipart/report document: ``The
- Multipart/Report Content Type for the Reporting of Mail System
- Administrative Messages''
-
- o Document bashing, MIME-delivery document: ``An Extensible Message
- Format for Delivery Status Notifications''
-
- o Document bashing, SMTP-DRPT document: ``SMTP Service Extension for
- Delivery Status Notifications''
-
- o All other business
-
-
- In this case, document bashing means exactly what it sounds like:
-
-
- o The group will go through the document page by page.
-
- o Comments on ambiguous language, unclear figures and spelling
- misteaks are in order.
-
- o Suggestions for grand redesigns are out of order.
-
- o A copy will be marked up with what time each page should be started
- in order to finish on time.
-
-
- If the document review is finished ahead of time, the group can discuss
- other fun things like receipt reports (no activity since last time),
- vacation notices (same comment) and so on.
-
-
- Multipart/Report Document
-
- Greg Vaudreuil presented a brief description of the multipart/report
- format. Harald Alvestrand pointed out that the third part of such
- objects, which is used for returned content, is not constrained in any
- way in terms of what it can be. The group decided that this is
- appropriate in this specification, but that other specifications using
- this format should be able to restrict what is allowed in this part.
-
- The group then agreed that this document should be submitted for
- consideration as a Proposed Standard by the IESG after this change is
- made.
-
-
-
- MIME-Delivery Document
-
- Discussion turned to the delivery report format specification. Keith
- began the discussion by presenting some issues reported by Eric Allman
- that have turned up in the context of implementation of this format in
- sendmail.
-
- The first issue was that of MTS type. This concept has proved to be
- difficult to understand. Keith proposed removing the concept of MTS
- type and replacing it with separate type indicators for the status code
- and address fields, and the working group concurred.
-
- A suggestion was made to replace the use of the term ``final MTA'' with
- ``reporting MTA.'' The working group agreed that this change is a good
- idea.
-
- Jim Conklin noted that various terms defined in RFC 822 were used
- without referring to their definition in RFC 822. Keith agreed to add
- the proper references to RFC 822 to the specification.
-
- The definition and use of xtext was then discussed. It was pointed out
- that the sharp sign used as a quoting character is a national variant
- character, which could be problematic in some environments. A prolonged
- discussion ensued, where various alternatives, e.g., use of
- quoted-printable across the entire notification body, use of
- quoted-printable on a per-field basis, and so on. Various problems were
- found with the alternatives, e.g., that the cross-body encoding does not
- allow for pure binary material, use of local quoted-printable breaks the
- comment usage now specified in the draft, and so on. The issue was
- eventually tabled for later discussion as time permits.
-
- The ``received-from'' field name will be changed to
- ``received-from-MTA.'' A suggestion was made to change the name to
- ``previous-MTA,'' but this was seen as actually being less clear.
-
- Discussion then turned to the issue of final versus remote fields. It
- was generally agreed that the two sets of fields are useful for both
- MTAs and status codes. The distinction between a final recipient and a
- remote recipient, however, seems less clear.
-
- A complex debate then ensued, where all of the various recipient fields
- (original, RFC 822 format, final, remote) were bandied about. The
- conclusion was to specify a typed earliest recipient field as the basic
- field that is returned, with Greg raising an objection that the field
- should be required to be in RFC 822 format.
-
- The action field was then discussed. There was some sentiment that the
- set of values should be extensible, but no decision was made to make
- them extensible.
-
- Keith then presented the latest status code proposal. In brief, the
- idea is to currently define a single digit status code based on the
- first digit of SMTP codes (2, 4, or 5), and subsequently to develop a
- standards track specification that provides more detailed status codes.
- This proposal was approved by the working group.
-
- The name of the ``date'' field was changed to ``last-attempt-date.''
-
- It was observed that with the ``final-log-id'' field, implementations
- use all sorts of identifiers and that there is no single clear
- identifier to put here. The working group decided to remove this field
- in favor of implementations using whatever ``X-'' fields they find
- appropriate.
-
- The group then moved on to consider remote status codes. Various people
- argued against these codes. Ned Freed pointed out that such codes give
- the appearance of precision when in fact they may not be. John Myers
- countered by pointing out that such information is very useful for
- trouble ticket applications, and proposed modifying this field to make
- it ``write only'' remote-MTA-specific information. Harald Alvestrand
- then pointed out that this proposal will be much easier to accept if
- SMTP codes that people already understand could be included.
-
- After prolonged discussion, Harald recommended tabling this issue and
- discussing it further on the list. Keith Moore will take the discussion
- as input and try to clarify the text, which will then be discussed on
- the mailing list.
-
- Harald Alvestrand pointed out that the security section needs to be
- enhanced to point out that various fields may be dropped due to security
- concerns. Certain fields need to be required, e.g., action and status,
- but practically everything else may be a candidate for removal by
- security firewalls.
-
-
- SMTP-DRPT Document
-
- The group considered the DRPT SMTP extension document. The first issue
- raised was an old one -- that of concern about the possible liability
- ramifications of delivery receipts. One possible approach is to use the
- ``relayed'' option in a receipt indicating that the message was
- successfully transferred but may or may not have undergone successful
- final delivery.
-
- It was proposed that the MTS type be carried in the same field as the
- address. There were no objections to this change.
-
- It was generally agreed that the delay notification mechanism needs some
- work. In particular, the times when such notices can or should be
- generated should be clarified.
-
- The idea of using this SMTP extension with other types of report
- requests was raised. It was generally agreed that other types of
- requests will require a separate and different extension.
-
- The meeting concluded with a long discussion of the quoting mechanism
- used in the SMTP extension parameters. The current draft calls for
- percent signs to be used, which given their use in addresses may be
- confusing. Various schemes were proposed and rejected. It was finally
- agreed that plus signs will be used as the quoting character.
-
-