CleanMail already offers built-in support for all popular virus checkers to protect you against virus attacks. The installer offers to automatically download and install the free open-source ClamWin anti virus package.
In general, CleanMail supports all third-party virus checkers that offer a command line interface. If your virus scanner is not on the list of supported scanners, choose ’Other’ on the first page of the setup dialog, and configure the AV filter command line, and the action to take depending on the scanner exit code yourself. Consult the virus scanner’s documentation to find out command line options and usage instructions.