Exchange 2003's IMF (Intelligent Message Filter) which is able to filter out the Unsolicited Commercial Email (UCE) based on the SCL (spam confidence level) rating.

I have SBS 2003 R2 with Exchange 2003 SP2, with built-in IMF 2.0. It was working great up until 30th March 2007, then all things failed. From that day onward, none of the spam/UCE are identified and filtered. I also have set up IMF to archive the UCE into a folder, and using a utility application IMF Companion to monitor any falsely-identified emails, so I can release them back to the Exchange.

Since 30th March 2007, the UCE Archive directory doesn't have any new spam emails, and incidentally, all those spam emails go into the mailboxes where they shouldn't been.

So my question is, does anyone here have any issue with IMF not working?

Any help would be appreciate as I hate to see spam emails again, and it was working great up until...