Scandalo is a very efficient and fast mail frontend for the clamdscan virus scanner. In other words, it is a simple mail filter that works as a wrapper for clamd, the famous Clamav antivirus daemon. Once integrated in maildrop or any MTA or MUA, it can quickly read messages and send them to the clamd process for virus scanning using the clamdscan utility. When a virus is found, the message is marked with a header, so you can easily set up your mail filter or MUA to drop, quarantine, or move the infected message to a mail folder.
Kaspersky Anti-Virus for Mac delivers real-time protection from over 30,000 new Internet threats that appear each day, including those specifically targeting Macs. It scans files, Internet downloads, and mail attachments, provides cloud-based monitoring of Web sites and applications, prevents your Mac from infecting PCs on your network, warns you if a website is suspicious or dangerous, works behind-the-scenes so it won't slow you down, and has a familiar, easy-to-use Mac-style interface.