Exchnage server 5.5   

Hi,  I am having problem with my exchange server 5.5. There is a virus called 
HTML/Phishbank.CFW which hit the Internet mail connector and change the 
configuration then I have to delete the IMC, reboot the server and recreate 
IMC again. I have CA antivirus for Exchange and It telling me that the file 
has been cured. This happen every 1-2 hours. Any help appricated

date: Sun, 6 Apr 2008 09:35:06 -0700   author:   CPQASE