Charles Sprickman:
> > There is no need to do everything in postscreen, especially considering
> > that the purpose is to block spambots, which is not the same thing
> > as blocking all spam operators.
>
> I really want to weight against some sources, not block them entirely
> though...
Quoting POSTSCREEN_README:
postscreen(8) is part of a multi-layer defense.
* As the first layer, postscreen(8) blocks connections from zombies and other
spambots that are responsible for about 90% of all spam. It is implemented
as a single process to make this defense as inexpensive as possible.
....
* The fourth layer provides heavy-weight content inspection with external
content filters. Typical examples are Amavisd-new, SpamAssassin, and Milter
applications.
In the last layer you get to combine different spamminess indicators
into one verdict.
Wietse
