Butler, Chad wrote: >
> I currently have Exim configured to check all recipient
> addresses against a list of known-good local parts. Exim then
> routes the messages to our Exchange server. The problem is
> that I routinely see queues of 4000 messages or more resulting
> from spoofed source addresses (Spam). This seems
> to cause the server to stop accepting SMTP connections
> several times a day. Each outage seems to coincide with a
> scheduled queue runner process.
Do you have set split_spool_directory?
This may help your server to cope with long mail queues.