Recommended pre-queue setup for Postfix

Simon Brereton simon.brereton at
Tue Nov 8 21:38:06 CET 2011

On 8 November 2011 15:21, Cristian Seres <cseres at> wrote:
> Hello,
> I would like to get an opinion which is the best configuration for incoming
> only Postfix mail gateway that should
>  - Reject virus, banned destiny and clear spam messages during SMTP session.
> It is important for us not to send backscatter to forged sender addresses.
> This implies using pre-queue setup for Amavis, right?
>  - Work in co-operation with opendkim-milter i.e. not break DKIM signature -
> or configure amavisd-new to check DKIM with option to discard email if
> sender domain's DKIM ADSP policy suggests to do so.
> Is the best practice in this case to use smtpd_proxy_filter setting in
> Postfix's and what are recommended settings to and
> amavisd.conf to go with it? Or is there some better way to do it nowadays?
> Amavisd-2.7.0, Postfix 2.6.6. About performance requirements: less than 15k
> incoming email per month which will be divided to two or three MX servers.
> I am looking forward to your suggestions.

I suggest you give me some of your budget :)

I do double that one server that does incoming and outgoing and amavis...


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