> -----Original Message-----
> From: Tony Finch [mailto:dot@dotat.at]
> Sent: Tuesday, June 28, 2005 1:39 PM
> To: peter@???
> Cc: exim-users@???
> Subject: Re: [exim] exim allowed someone to slam my mail
> server for 3 hours
>
>
> Exim doesn't support tightly-coupled clusters. This is a
> weakness in the implementation of the hints DBs, and fixing
> it was outside the scope of the ratelimit project. There are
> other things that would benefit from better hints DBs: the
> current implementation is a major bottleneck for high
> capacity servers, so there's scope for improved performance;
> sharing the hints DBs will reduce duplicated work across a
> cluster (retrys, callouts, etc.); greylisting would be much
> better if implemented cluster-wide rathe than per-machine.
> Perhaps one day someone will tackle it :-)
>
> Tony.
Any thoughts on how to improve the current performance of the hints
databases ?. We currently use exim to deliver ~250,000 messages a day and
are about to implement a system to take that to 2.5M per day (We use
multiple load balanced servers) but I have the same concerns about the db's
- particually as now the rate limit stuff uses them too.
-Andy-
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