excluding checks for @mynetowrks - amavis vs. postfix problem

Tomas Macek macek at fortech.cz
Wed Sep 21 10:51:25 CEST 2011

I want to exclude some part of Postfix's mynetworks from Amavis spam checks, 
but really only some part, the rest should be checked as ussual. The "some 
part" is a subnet, in that I have all my servers sending emails, that should be 
For example here I'm trying to say, that my servers (that I want to exclude) 
are in subnet.

Our network is large - we use much wider range of public IP addresses, but
I will use a simplified this example only.

I'm using Postfix 2.8.4 with
 	mynetworks =

and want to setup amavisd.conf of my Amavis 2.6.4 to contain this:
 	# I think this will add only first 8 addresses to @mynetworks.
 	@mynetworks = qw(;

 	$policy_bank{'MYNETS'} = {
   		originating => 1,
   		os_fingerprint_method => undef,
   		bypass_spam_checks_maps   => [0],
   		bypass_banned_checks_maps => [0],

The doc of Amavis says, that mynetworks in main.cf and @mynetworks in 
amavisd.conf should be the same and @mynetworks should contain all the IP 
addresses of local network.

What bad will could happen if this will differ? Hope this will not lead to some 
complicated answer...

Best regards, Tomas

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