On 8/15/2007 11:11 PM, Marc Perkel wrote:
> As opposed to preprocessing before using SA to reduce the load. (ie.
> using blacklist and whitelist before SA)


All email sent to port 25 goes through SA for processing. Postfix has a
couple of regular expressions and some behavioral stuff (invalid commands,
invalid recipients, etc), but otherwise it just looks for the spam score
and if its too high the transfer is rejected.

--
Eric A. Hall http://www.ehsco.com/
Internet Core Protocols http://www.oreilly.com/catalog/coreprot/