Best Antivirus Options for a Mailserver?

CSIP asks: "I am setting up a small mailserver, with ~500 users, across 80 domains. I'm planning to use qmail-scanner and an antivirus scanner to block incoming viruses. I would prefer to use ClamAV, however I've read conflicting reports on its effectiveness. The commercial scanners appear to detect 99.X% however they are licensed per-user, which at 500+ users becomes quite the annual bill. What is everyone's experience with ClamAV? Are their other commercial scanners that allow you to license on a per-server basis?" The best indicator of quality for a virus scanner is the information in its virus database. How do ClamAV's virus definitions compare to commercial scanners, like McAfee's?

Comments

Re:there's always the blowtorch on an ant method!

[cybermace5]

Do it. Then set up a simple web-based upload/download site using PHP. This is more efficient because the attachment doesn't need to be encoded for mailing, and gets around any attachment size limits for various users.

It's extremely easy to do, and you could even set it up so that each uploaded file gets a little key so only the intended recipient can get it. The uploader script will automatically send an email to the desired recipient, containing a URL with the unique key embedded. Having all of the files stored on the server like that will probably cut down on all the inappropriate files too.

Solution should take no more than three PHP files of 100 or less lines each.