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- Xref: sparky comp.mail.misc:4284 comp.unix.admin:6946
- Newsgroups: comp.mail.misc,comp.unix.admin
- Path: sparky!uunet!spool.mu.edu!torn!newshub.ccs.yorku.ca!yorku.ca!davecb
- From: davecb@nexus.yorku.ca (David Collier-Brown)
- Subject: Re: Microsoft Mail SMTP Gateway
- Message-ID: <davecb.726417104@yorku.ca>
- Sender: news@newshub.ccs.yorku.ca (USENET News System)
- Organization: York University
- References: <1993Jan07.035947.15311@i88.isc.com>
- Date: Thu, 7 Jan 1993 14:31:44 GMT
- Lines: 88
-
- mikebo@i88.isc.com (Michael Borowiec) writes:
- |If anyone has gone the MS-MAIL with SMTP gateway route, I'd be
- |interested in your experiences so far. Especially...
-
- |1) How hard it is to get/keep the gateway configured?
- For a small number of people, fairly easy. We have
- an experimental (proof of concept) service for our
- own department. We have some 103 people, of which
- 13 have their mail redirected to a MS-MAIL post office
- from the ccs.yorku.ca mail nail-server.
-
- Registration has to be kept in sync manually, so we simply send mail
- to each other when someone changes. This is perfectly possible for
- 13 people, scales badly for 100 people and is probably the
- definitive bad idea for the whole staff (we have about 16,146
- mailboxes for non-students at last count: lord knows how
- many undergrads we have)
- .
- |2) Do MS-Mail postoffices require an additional and expensive
- | "downstream" module to route or send SMTP mail to the gateway
- | or to translate MS-Mail to Internet style addresses? A Microsoft
- | rep has claimed the SMTP gateway package is all we need.
-
- I'll have to ask...
-
- |3) MS-DOS is single tasking, I assume one SMTP connection at a time?
- | Does this create real problems? What are they?
-
- Well, the queue gets long (:-)) We process 150-200 K messages
- a month (that's only 5,000 - 6,000 per day) so a single
- gateway wouldn't work for a large configuration. Assume the
- delivery rate and processing rate aggregate to about one message
- per 30 seconds and we'd need something like 3 gateways. As
- messages get larger or the arrival times get lower, the
- need would go up, of course.
-
- |4) Any problem with the gateway wedging up? If so, any workarounds?
-
- Yup: don't use a PC. We had a amchine that was too small
- initially and it hung due to an out-of-memory problem
- with some regularity. Throwwing hardware at it fixed the
- problem.
-
- |5) Can you have multiple SMTP gateways on one LOCAL Area Network?
-
- As I understand it, the number of gateways is mostly
- a naming issue: some machine gateways for a given
- named aggregate (in our case ``ccs''). We are going
- to see if we can add a second community to the same gateway
- Real Soon Now (:-)).
-
- |6) Can you have multiple SMTP gateways on one WIDE Area Network?
-
- Yup.
-
- |7) If yes to 5 or 6, how do you route mail to the correct gateway?
-
- On a per-domain or per-person basis, accept the mail at an
- intermediate machine and route there. We use zmailer and
- can route domains via a ``routes'' override file and
- people via a normal alias file. If you use sendfail(8)
- you'd best use aliases.
-
- In general, a community is going to have more than one
- ``religion'' of mailer, and you will have to do the
- following as a general (and also worst) case:
-
- for each in named-communitys; do
- find sysadmin*2, novell server, nlm, \
- pc, gateway software, unix server;
- register all users at each end
- coordinate aliases between gateways
- while :; do
- for day in workdays; do
- monitor
- amend
- done
- done
- done
-
- Not too different from managing our old PROFS system.
-
- --dave
- --
- David Collier-Brown, | davecb@CCS.YorkU.CA | lethe!dave
- 72 Abitibi Ave., |
- Willowdale, Ontario, | York Postmaster and
- CANADA. 416-223-8968 | occasional sendfail(8) consultant.
-