From: aio shin (aioshingmail.com)
Date: Fri Feb 22 2008 - 08:17:11 CST

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Sorry for not giving the complete scenario.

Its an MX and then relaying to 3 mail servers. on the 3 mail server, 1
is also postfix, the others are exchange. Yes, it also serves as spam
and virus scanner via amavis. As mentioned, 1 domain, thus that have
postfix/amavis has been set to bypass scanning on this MX host, and
only scan those intended for the remaining other domain which uses MS
Exchange.

It ables to flush the queue fast when we set the 30 amavis processes.

[other: (since this is amavis only) why is it that amavis is being
defaulted to 2 max_server and 4 smtp process? after all the current
cpu age right now. I think those settings has been used since amavis
started ( just correct me if am wrong)

On Fri, Feb 22, 2008 at 12:58 PM, ram <ramnetcore.co.in> wrote:
> But what is the role of this server. Is this an Anti-spam box sitting on
> the MX ?
>
> When asking to lists it will help if you give the complete relevant
> scenario
>
>
> Thanks
> Ram
>
>
>
>
>
> On Fri, 2008-02-22 at 03:23 +0800, aio shin wrote:
> > Maybe the load balancing part is right, but we have not yet tried that.
> >
> > We suspect that amavis created a bottle neck because when we
> > temporarily disable amavis, and only postfix is working, no filtering
> > but have the rbl listing, the queue are cleared fast.
> >
> > Now, we have tried increasing the Max server of amavis from 2 to 15
> > and also increase the amavis smtp unix process at master.conf to 15.
> > And it resolves the long queue hold time.
> >
> > The only side effect is that it cpu usage increase as amavis works at maximum.
> >
> > For now, that is the solution. it only relay the email to other
> > postfix servers, so in addition to reduce the load, we let some relay
> > domains to bypass spam and virus scanning.
> >
> > Thanks for sharing your advice.
>
>

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