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- On Sun, 27 Sep 1992, Chris Newman wrote:
-
- > Steve Hole <steve@edm.isac.ca> writes:
- > >2. Who is responsible for the development of the message management
- > >protocol? Is there a mailing list for this? What is the status of
- > >this effort?
-
- > The CMU team (John Myers and myself) have agreed to spearhead the
- > design of this protocol. We have just finished our survey of user
- > requirements on campus, and have a final functional requirements
- > document for the mail system we will need here (and a draft design
- > document).
-
- Would it be possible to have a look at this document? I would be very
- interested in comparing the requirements of your organization to the
- requirements of the business and government organizations we do work
- for.
-
- Also, is there a mailing list for discussing these issues - or is the
- IMAP list a good enough forum? Can I suggest that it would be
- worthwhile to create or designate a list for such discussions.
-
- > I expect us to start design of the protocol in a month or so, and you
- > _might_ see an implementation in a year. The protocol is likely to be
- > very similar to IMAP2bis (probably with some of the same commands for
- > subscriptions & such).
-
- Very good! This is pretty much as we expected - it should integrate
- nicely into the user interfaces.
-
- > Delivery acknowledgements are useless (the message will bounce if not
- > delivered).
-
- I used to think so. In fact they would be IF all the MTA's in the
- world handled bouncing mail correctly. Unfortunately, many MTA's make
- a habit of returning badly addressed mail to the postmaster (actually
- MAILER-DAEMON) at the originating site, rather than to the originating
- user - especially if the mail originated outside the organizational
- domain. The result of this is that mail often ends up in a postmaster
- queue that only infrequently gets checked.
-
- Now, I understand that the role of the postmaster should be monitored
- and managed correctly, but the reality for us is that it often is not.
- In some of networks, we have 50+ departmental workgroups, each with
- their own mail servers and assigned domain. This is a very nice
- solution for large hierarchical organizations, but we do find that
- administrative functions tend to slip. For executive class messages
- (Very Important Messages VIM :-), even a 15 minute delay on getting the
- message back if improperly addressed is enough for the executive to
- complain.
-
- I agree that the MTA's should deal with this correctly, and I continue
- to lobby for policy change within the various development groups (smail,
- zmail, sendmail), and do enforce it locally. The bottom line is, that
- delivery acknowledgement would still be beneficial for us, especially
- when dealing with external organizations.
-
- > Read acknowledgements, and reply are client issues. If by "automatic
- > reply" you mean something like the unix vacation service, we have that
- > rated as "NICE" meaning we'll consider it if we get time (I think
- > putting support for it in either the management protocol or the user
- > directory protocol is reasonable).
-
- I agree.
-
- > >4. Is there an agreement or description of where services like
- > >automatic reply should be provided - in the MTA or the MUA? X.400
- > >specifies the message store (which makes sense), but there is no
- > >equivalent in the Internet architecture (I think there should be).
-
- > Anything that can go in the MUA should, IMHO. Keeping the MTA &
- > mailstore simple and easy to maintain is very important. Things like
- > vacation replies, and automatic filing of incoming mail will probably
- > be put at the mailstore end of the MTA.
-
- That is pretty much how I thought it would go. We have already done
- some experimentation with smail 3.x drivers to handle automatic reply,
- and new mail notification - it already handles forwarding.
-
- > >5. There was some mention on work being done to implement
- > >lightwieght directory access protocols for getting X.500 information
- > >quickly. Could someone point me to these individuals again? This is
- > >very important to us as a mechanism for distributing public keys for
- > >PEM.
-
- > There's a protocol called CSO/ph which we're going to look into. If
- > it's not good enough, we'll design & write our own.
-
- Is CSO/ph an OSI compliant protocol, or some new creation for an
- Internet only Directory service? I know that Andrew has its own
- directory service which appears to be quite serviceable - is this what
- you are talking about?
-
- Cheers.
-
- --
- Steve Hole Director of Research and Communications
- ISA Corporation mail: steve@edm.isac.ca
- Suite 835, 10040 - 104 St. phone: (403) 420-8081
- Edmonton, Alberta, Canada fax: (403) 420-8037
- T5J 0Z2
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