slightly OT Sendmail question

Julian Field mailscanner at ecs.soton.ac.uk
Wed Oct 16 09:30:03 IST 2002


At 23:01 15/10/2002, you wrote:
>On Tue, 2002-10-15 at 12:23, Thomas DuVally wrote:
> > Hi All,
> >         I have a silly question concerning sendmail.  I'm using
> mailscanner,
> > but that's not really an issue in this instance.
> >
> > Lets say, hypothetically, someone set the sendmail to run like this:
> >
> > /usr/lib/sendmail -q15s
> >
> > So that the queue would be hit every 15 seconds, and the server was
> > pretty high volume.  University level, hypothetically.
> >
> > Would that cause mail delay? Or no effect? Or something else.
> >
>My thinking is that every 15 seconds is probably excessive for general
>processing of a mail queue. What I do on a high volume server is to
>invoke sendmail once a minute to process only local mail (by
>domainname). What's left in the queue (non-local mail) is tried every 15
>minutes.

In version 4, you can change the outgoing queue depending on the
destination address of the message. So you can automatically put mail in
the right outgoing queue, if you use more than 1 outgoing queue.

>  And using re-mqueue from the sendmail distribution I move
>messages to other queues that run less often as messages that can't be
>immediately delivered age. The crontab looks a mess, but it optimizes
>mail delivery.
>--
>The instructions said to use Windows 98 or better, so I installed
>RedHat.

--
Julian Field                Teaching Systems Manager
jkf at ecs.soton.ac.uk         Dept. of Electronics & Computer Science
Tel. 023 8059 2817          University of Southampton
                             Southampton SO17 1BJ



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