Re: [EXIM] maximizing thru-put

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Author: Nigel Metheringham
Date:  
To: mark david mcCreary
CC: exim-users
Subject: Re: [EXIM] maximizing thru-put

mdm@??? said:
} max_rcpt in the SMTP transport section. If set to 500 in this example,
} each mail message should only be sent only one time to aol.com

Some systems can't take that many recipients in one message.

} remote_max_parallel in the main configuration setting. Setting it to
} 11 should get 11 remote deliveries running at one time, for mail
} message.

make sure you are running a 1.82 with patches or a 1.89x system if you are
doing this - there was a bug related to reusing smtp connections when
there was parallelism in progress.

} If I have the queue runners set to run every minute, then perhaps 45
} minutes after the 5 mail messages have been recived, the first mail
} message should start being delivered. The other 4 are finishing up
} routing, and will start running in another minute or two, as the next
} queue runner finds the next available job.

This seems very slow...

} Any comments or suggestions ?

Run a named/bind process on the mail system to cache the DNS data.

The list box which runs the exim list (around 300 people) is a P75 running
Linux with 24MB RAM. It has the input message split by the list MLM (this
speeds up the routing dramatically) into something like 6 chunks. I have
just looked at the queue, and the last message injected (8 minutes ago)
has delivered to all by 2 recipients (and those have been causing problems
for a while).

    Nigel.
-- 
[ Nigel.Metheringham@???   -  Systems Software Engineer ]
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