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On Thu, Nov 11, 2010 at 04:08:27PM +0100, Mike Pall wrote:
> Apparently is running Exim on Debian.
> Alas, the standard configuration is absolutely not suitable to run
> a mailing list of this size. Unless the limits have been tweaked
> and the worker processes have been scaled up, it's going to end up
> with tons of undeliverable, delayed or frozen messages in
> /var/spool/exim. Since every queue runner has to traverse them
> all, you end up with an O(n^2) scaling problem which brings down
> the best server. Maybe the admins want to take a look at that.]

The machine isn't running a stock Exim package, and is running with severely
custom configuration, both in terms of mailman and of exim itself.  It's
possible we've not yet hit the sweet-spot for a list of this complexity, and
suggestions/hints would be gratefully received.

We have isolated a number of "trouble" domains, which seem to take a very long
time to get deliveries to, but for the most part things look okay from our end
and deliveries seem to be happening in a reasonably timely fashion for most

Indeed, so far as I can tell, lua-l causes us less trouble than our usual spam
load.  I am obviously missing something if there are people who are
experiencing this kind of delay.  I shall look into it.

I can only apologise for the issues, and ask that anyone experiencing problems
drop me a mail at detailing the address you are
subscribed via, and any concrete examples of issues you've been having, ideally
along with message IDs.



Daniel Silverstone               
PGP mail accepted and encouraged.            Key Id: 3CCE BABE 206C 3B69