[Mimedefang] Content filtering

[Louis Bohm]

I have used mimedefang with spamassassin to do anti-virus content
filtering but has anyone tried to use mimedefang with something to look
for perpritory content leaving a company going out bound.

To me it does not sound that hard as mimedefang already splits the email. 
The question is what would you use to filter through the email like
spamassassin does for spam?

Anyone have any ideas???

Thanks,
Louis