This was recently discussed. Please see the mailing list archives:
On Wed, 31 Oct 2001, Mike Gurtzweiler wrote:
> A faculty member here my department asked me this today. Honestly I cant think of a good reason NOT to have the servers do this. I have set up Norton Corporate edition here in my department and it catches literally hundreds of virus's from email attachments a day, and this is a small department (Parks, Recreation and Tourism Recourses).
> Just thought I would pose the question.
Joe Budzyn [log in to unmask]
301 Computer Center Ph: (517) 355-4500 x162
Michigan State University
East Lansing, MI 48824