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Message from discussion configuring sendmail for highload incoming mail
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Per Hedeland  
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 More options Dec 11 2001, 6:50 pm
Newsgroups: comp.mail.sendmail
From: p...@bluetail.com (Per Hedeland)
Date: Tue, 11 Dec 2001 23:46:46 +0000 (UTC)
Local: Tues, Dec 11 2001 6:46 pm
Subject: Re: configuring sendmail for highload incoming mail
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In article <ywheqydjx6....@as101.tel.hr> Aleksandar Milivojevic

<a...@fly.srk.fer.hr> writes:
>What you want to use is ConnectionRateThrottle, QueueLA and RefuseLA.
>If your E450 will be dedicated mail server, something like:

>ConnectionRateThrottle = 8
>QueueLA = 10
>RefuseLA = 20

>should be perfectly OK.

On a dedicated mail server, you want to set QueueLA *higher* than
RefuseLA - the other way around will cause your queue to explode when
the load is high (assuming you reach QueueLA of course), you accept lots
of new messages but can't get rid of them as the load average hovers
around RefuseLA - the many messages in the queue drive up disk I/O and
thereby the load average.

The default of QueueLA lower than RefuseLA only makes sense for a server
that does other things besides mail, where you want to reduce the impact
of the mail load on the other functions by queuing instead of delivering
when the load is high.

--Per Hedeland
p...@bluetail.com


 
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