You could always try Surfcontrol Email Filter. More expensive than SA but does a hell of a good job. Grab a 30 day trial and see what you think.
http://www.surfcontrol.com/products/email/ I don't work for them, but do have it implemented for mulptiple clients and am happy. Cheers Zach _______________________________________________ Full-Disclosure - We believe in it. Charter: http://lists.netsys.com/full-disclosure-charter.html
