Re: [Exim] Exim is Unreasonably slow

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Autor: Nico Erfurth
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A: dgtech
CC: exim-users
Assumpte: Re: [Exim] Exim is Unreasonably slow
David Garza wrote:

>>>host_lookup = 0.0.0.0/0

                         ^^

> According to the Exim documentation, that should only run a lookup on
> 0.0.0.0 IP addresses which of course since there is no such IP, it won't.
> That is how I interpreted.


0.0.0.0/0 means "The whole ipv4 address space".
use
host_lookup =
or just leave the option unset to disable the lookups.
Also see http://www.exim.org/exim-html-4.30/doc/html/spec_14.html#IX1126

> I do this because when my script runs again, exim is trying to deliver while
> it is queuing, which causes the load to go very high. When just running the
> queue by it's self with up to 75 processes, I get a total of load sometimes
> to 21.


Set queue_only_load.
http://www.exim.org/exim-html-4.30/doc/html/spec_14.html#IX1243
Or all the other ways to queue messages before delivering:
http://www.exim.org/exim-html-4.30/doc/html/spec_5.html#IX422
http://www.exim.org/exim-html-4.30/doc/html/spec_14.html#IX1231
http://www.exim.org/exim-html-4.30/doc/html/spec_14.html#IX1236
...

> Since I am using a simple IDE 7200RPM 80gb Harddrive, would it increase
> performance by a good enough jump to go with a SCSI?


Is your drive using DMA and all the other shiny options that can speed
up disk access?

Nico