> -----Original Message-----
> From: Philip Hazel [mailto:ph10@cus.cam.ac.uk]
> Sent: Friday, April 08, 2005 12:49 PM
> To: Andrew Johnson
> Cc: exim-users@???
> Subject: Re: [exim] Maximum number of recipients
>
> On Fri, 8 Apr 2005, Andrew Johnson wrote:
>
> > Is there a maximum number of recipients that an exim alias
> can expand
> > to if it's driven from a database or LDAP lookup ?
>
> No (other than memory limitations). But you really don't want
> to be sending one message to thousands of recipients, as it
> will slow down Exim's processing. Much better to use proper
> mailing list software. Most of those packages can be
> configured to send multiple copies with, say, 100 recipients in each.
>
> --
> Philip Hazel University of Cambridge Computing Service,
> ph10@??? Cambridge, England. Phone: +44 1223 334714.
> Get the Exim 4 book: http://www.uit.co.uk/exim-book
>
Thanks...
We were kind of stuck at the mailing list point as the system runs in a load
balanced/resilient configuration where some of the recipients are just
normal recipients, some are static lists, and some are dynamic lists where
we retrieve a query from the directory server and then process that query to
gain the list of recipients. We would have had to create a load balanced
resilient sub platform just for dealing with mailing lists, and also I
couldn't immediately see how to just hive off the mailing list aspects, as
then mailing lists can expand to single users and other mailing lists. It
would have generated a lot of extra new emails and made tracing/audit a
nightmare. There are already 6 email servers purely doing routing in the
platform!
As it is right now, we process a single message and are less concerned about
the length of time it takes to deliver - one process handling all the
recipients for that single message is fine.
Any idea what the memory overheads are per 1000 recipients say ?
-Andy-
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