[SASAG] spam filtering

[Eric Kahklen]

I am looking for suggestions on what people have found useful in
decreasing their incoming spam.  I've implemented a number of options in
Postfix which helps a little, but I need to get a little more agressive
without deleting legitimate email.  Free software is ideal, but if it
costs money that is fine too especially if its less time to configure
and manage.

Thanks,
Eric