Hi,
Thank you for the post.
This forum is mainly focus on general question about Forefront security for Exchange, it seems like you have mispost the forum. if you mean FCS, please review this kb:
http://support.microsoft.com/kb/971026/en-us. if the question related to Forefront Endpoint Protection 2010, please post this issue on this forum:
http://social.technet.microsoft.com/Forums/en-US/FCSNext/threads.
Regards,
Nick Gu - MSFT