excluding checks for @mynetowrks - amavis vs. postfix problem

[Jakob Curdes]

> On Wed, 21 Sep 2011, Jakob Curdes wrote:
>
>> I just give these machines a negative score ...
>
> Nice, but I really don't know, how could I achieve that per IP address 
> (howto begin with negative score). I found only this: 
> http://www200.pair.com/mecham/spam/bypassing.html#5
Actually I do not do this via the IP but I let postfix add headers for 
authenticated senders . Then I assign a spamassassin score for this. So 
you could have your sending machines do an smtp-auth or you could 
perhaps set the score on the basis of other crteria, but I never tried 
the latter.

jc