On Wed, 12 Apr 1995, Tom Limoncelli wrote:
> > Does anyone here have suggestions for getting messages out to a large
> > subscriber list (which invariably contains undeliverable addresses that
> > seem to *drag* sendmail's delivery to the entire list down time after
> > time) with a little more efficiency/brains than sendmail has wanted to do
>
> The standard answer to this question is, "Install Sendmail 8.x
> because it does all the sorting, grouping, etc. that you can
> imagine". Huge mailing lists suddenly use much less bandwidth
> because of all of this.
Er, yes, it uses ESMTP, but you still have to do delivery to N domains,
and given that it takes an average of M seconds per domain (which
given a fat enough pipe doesn't vary with what else is going over
that pipe) that's N*M seconds to complete the job. A better solution is
to split up the lists into X well-balanced sublists, so that delivery
takes N*M/X seconds instead (modulo variations in delivery time based on
what heuristic you used to create those sublists). Sounds like that's
what bulk_mailer does.
Brian
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