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Subject: Large job submissions
From: Francisco Reyes (franreyes.somos.net)
Date: Tue Jul 04 2000 - 07:08:10 CDT

At work I may be given the chance to try PostFix.
We have a process which creates about 20,000 emails at once.
Based on what I have been told so far the current machine
couldn't handle it and they had to change the submitting program
to send smaller batches.

I haven't got a clear picture yet of the requirements, but it
seems that delivery time is not the biggest problem, but the
machine accepting all these emails. The current machine could
not handle the job submition. I am sure that machine is probably
not configured properly, but it is much easier for me to try
postfix than to try to figure out what they did to that box
(running Solaris/sendmail and I am most familiar with FreeBSD
and now learning Postfix).

What kind of changes can I make to accept such big jobs?
They are giving me a test box at first with only 64MB of ram and
probably an 8Gig drive, so there is not much room for
configuration there. Will 50 SMTP agents be ok with 64MBs? I
expect message sizes to be between 5K and 20K.

If this works out, then I will get another computer and I would
like suggestions on terms of some basic specs. For instance what
directories would benefit from having their own disk?
So far I was thinking of /var/spool/postfix and
/var/spool/mqueue
Which directory will hold all the incoming messages "mqueue?"
Will 256MB be OK?

Again the overriding concern does not seem to be that the
messages go out super fast, but that the machine can accept all
the messages. It really doesn't make much difference if the
machine takes 30 minutes or two hours. Obviously I want to
create the best setup I can with whatever hardware they give me
so I would play with the settings before going on production.

Francisco