I have been experimenting with running McAfee VirusScan Enterprise v7.1.0 on a server running Imail v8.12.
Uh-oh.
McAfee VirusScan is configured to ignore (does not scan) file types MBX and NBX.
Well, that part is good. That will help minimize the very high CPU usage (you'll still find it scanning temporary files IMail uses, E-mails as they arrive, and mailbox files that IMail is manipulating). And it will help prevent entire mailboxes from being deleted (it can still happen if they using a different extension, such as .~bx, however).
Virus/worm laden files (D*.SMD) are detected as SMTPd32.exe writes the file to disk.
No. Some virus/worm laden files are detected. Various virus scanners will detect different amounts, anywhere from none to many. I haven't heard of a desktop scanner that can detect most.
Note that by doing that, it will also leave the Q*.SMD file, which can cause problems. For example, you are likely to get blank E-mails, and will have a hard time delivering E-mails if there are false positives (although that should be rare).
Other issues include poor logging (it may log that it finds viruses, but you would have to do a lot of work to find out who it was sent from/to), no notifications, no ability to use multiple virus scanners, no mailserver AV vulnerability detection, etc.
It's kind of like using IMail filters to block attachments -- it's a "poor man's" way of doing it. If you can put up with the drawbacks, the price is right (free or nearly free!). But if you need a very high level of accuracy, you need the right tool for the job.
-Scott
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