I work as an IT assistant for about a 100 client windows network, and I am wanting to look at my options for filtering out virus and spam. The big thing is that currently our email is outsourced so it is not on our network nor do I have access to the email servers. I wanted to setup a gentoo box to do this filtering but wanted to get some input on the best way to do this. Does this idea seem reasonable? Is the filter box going to have to filter all internet traffic or is there a way for it to just filter email traffic. There are alot of howtos out there on filtering but I am unsure how to approach this in my senario. I truly appreciate any input.
Thanks

