[SM-USERS] Possible filter feature?

[Harold H. <ha...@ha...>]

     I'm using Spam Assasin on my server, and it's working VERY WELL. I
use a SquirrelMail filter to look at the X-SPAM-LEVEL and filter
based on that. What I'd like to do now is prior to running that
filter, have one that checks the FROM header to see if it matches
anyone in my address book. If so, the message would be sent to the
inbox. This'd be an automatic white list handled by SM, which seems
easier than having users have to deal with a separate SA white list.
     Possible? Good idea? Bad idea?

THANKS!

Harold