On Fri, 1 Feb 2008, Peter Kirk wrote:
>
> Was about 30000 mails in 4 hours :) and could have been more... so the
> trick is don't put to many recipients in a mail as takes longer to
> process mails :)
Another good idea is to sort the addresses by domain before splitting them
into per-message batches. This means that if you have lots of recipients
at the same domain, they'll be grouped into the same message(s), so exim
won't waste time looking up the same domain again and again.
I wonder if MBM is around. He helped the MySociety guys tune Exim to send
out the 1.7 million message government response to the road charging
petition.
Tony.
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