# Anti-Virus Overview

IMail Server Anti-Virus is an additional add-on product that must be purchased separately from IMail Server. IMail Anti-Virus is equipped with state of the art anti-virus technology to provide increased security for your mail system. Symantec's CarrierScan is one of the most comprehensive virus scanners available, and with its integration into IMail Server, you can be sure that your mail server will not be compromised.

IMail Anti-Virus is a utility that searches all incoming and outgoing mail for viruses, worms, trojan horses, and other destructive code. It does this by comparing all mail messages with a list of file extensions, and known virus definitions.

It also uses heuristic technology to discover new viruses by searching for general characteristics, or behaviors, of existing viruses. If it detects a virus, the anti-virus can attempt to repair the infected file, delete the message, or bounce the message back to the sender. A log file entry is then generated and an e-mail is sent, to alert the administrator of the problem. In addition, the System Administrator can set a "Redirect Address" to which infected e-mail messages are sent.

To begin configuring IMail Anti-Virus see Anti-Virus Administration.