an onsite user is getting a lot of spam/virus emails to his email address on our exchange server domain. he has been getting the recent cia/fbi and paris hilton spam. he is the only user on site that seems to be getting a lot of junk (coming back from a 4-day weekend, he had 74 junk emails in his outlook inbox.) i am wondering if there is a way to prevent these coming to his inbox. we use trend micro scanmail, which is catching the viruses and removing them from the messages when they hit the exchange server, but then they are allowing the attachment-free messages to get to his inbox, where he is having to scan through all of them to make sure there are none that are legitimate. any ideas on how to prevent these spam messages showing up?