Any active signature-based virus scanner will require extensive CPU/Memory for that kind of load. I'd go with a procmail filter to catch KLEZ-like executable attachment worms and a profile scanner behind that to pick up attacks in the message body and content attachments. This relieves some of the load on the scanner since you've already caught the easy ones. YMMV. On Tue, 27 Aug 2002, Bob Tanner wrote: > Anyone know of any "enterprise" level virus scanners for linux? > > Something that will work for thousands of mailboxes? > > >