spam filter

Tried this filter with no luck. 

               :0:
               * !^TO_holtzm(_at_)primenet(_dot_)com             
               /home/holtzm/mail/spambox

Can someone tell me what I'm missing? Thanks in advance.
-- 
Bob Holtzman
"If you think you're getting free lunch
 ......check the price of the beer!"



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