Unfortunately, you can't add protection to the documents, only the transport system and antivirus software on the sending and receiving servers and PCs. I assume that this server is on the local LAN to do the uploads from the internet. If Symantec, McAffee or any of the good antivirus software is residing on the server the database is on it should catch anything that is fed to it. We use Symantec on our servers here. 12 Comm uses Symantec on the Exchange servers as well as the firewall servers. As long as the systems that are sending the files are well protected with antivirus software there shouldn't be a threat. However, y'all absolutely must stay on top of the updates sent by the antivirus software company. You also have to stay on top of any and all security updates from Microsoft. Find software that will run on all of you systems that checks to see if ANYone who logs on to your network is completely up to date with all security patches. And if they're not, it uploads them on to their systems before they are allowed to proceed, or have access to your local LAN.

u need a Server Edition antivirus with a web shield(web shield not a firewall)

use mc afee