Antivirus options for a network [virus def] [novice users]

Q: It sucks to each individual PC on a network with its own antivirus solution. Not only do you have to ensure that every virus will def. updates on a regular basis, but there are always new users who do not know what to do when they know what to do with an infected email.

I know there are solutions at the gateway to all incoming and outgoing e-mail can scan you asked SMTP port, allowing for a central location for virus fight infection. Ive also heard of another scenario, where e-mail