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receipt-minutes-95jul.txt
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1995-10-18
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CURRENT_MEETING_REPORT_
Reported by Alireza Bahreman/Bellcore
Minutes of the Receipt Notifications for Internet Mail Working Group
(RECEIPT)
RECEIPT met as a BOF at the 33rd IETF on Monday, 17 July. The group has
since become a working group.
Draft Agenda
o Select author for first Internet-Draft
o What do we need exactly?
o Technical proposal
o Usage guidelines
o Charter
Author
The author was identified as Roger Fajman. He will be producing the
first draft within a month.
What Do We Need?
The focus of this group is to specify a standard mechanism to request
and transfer read receipts, as well as advising the users on security
and privacy issues related to utilizing these mechanisms. The receipt
is completely voluntary on the recipient side, meaning they are not
obliged to return a receipt.
Some suggestions were made by the audience to provide notifications
specific to non-receipt, as well as scenarios where a message is passed,
deleted, or otherwise ignored. The term `receipt' is overloaded and it
may be helpful to either clearly specify the meaning or use other terms
such as `disposition'. The term `presentation' was also suggested in
place of `receipt' notification. The draft document will clearly define
the meaning of the term `receipt'.
The security of the receipt notification mechanism was questioned. In
particular the ability to repudiate receipts, or otherwise create false
receipts. The group decided not to address security based on the
lessons learned by other security groups' efforts being delayed as a
result of addressing security issues. It was decided that the security
concerns will be addressed in a second phase of the working group.
Discussion was conducted on applicability of this service for specific
communities in which certain policies can be locally enforced to
automate the processing or handling of receipts. None the less, it was
argued that this mechanism is a `sender' service, in that it is helping
the sender decide what happened to the message sent. The service must
be least intrusive to the recipient.
Technical Proposal
On the NOTARY distribution list a first technical solution has been
sketched. The read receipt request is transmitted using a new header in
the message. In the case where the message has multiple recipients and
only for some of them a read receipt is requested, then two messages are
created, one for the recipients with a read receipt request in the
header and one one without. The confirmation is generated based on the
NOTARY work using multipart/report content type.
It was deemed important for the mechanism to interoperate with all other
mail systems including gateways, etc.
Usage Guidelines
It was agreed that it is critical to explicitly identify and specify
what it entails to receive and return a read receipt notification for
all parties involved. This might well be the biggest part of the
document.
The document will also include documented (with diagrams) scenarios as
to what each party can expect at each phase of the protocol, from
requesting a receipt to its transfer from the recipient to the sender.
The document will specify all phases including MTA delivery, message
storage, and UA display of message subject line.
The group is in consensus on protecting the privacy of recipients
against automated receipt generation. For example, the recipient may
wish to respond to a message and acknowledge receipt at a later date.
Charter
The mailing list will be created and interested people must request to
be subscribed. An archive will also be maintained. The details are not
available yet but will be announced soon.
The charter will be sent to the mailing list. The first draft will be
available by 17 August 1995. The draft will be reviewed by the next
IETF. The working group is expected to have a lifetime of one year.