Sophos Anti-Virus for Mac OS X has been updated to work on Mac OS X 10.3.

Anti-Virus enables automatic updates of all desktops, whether they are connected to a local area network or to the Internet, and remote users can keep systems up-to-date with automatic updates from their company Web site.

Sophos Anti-Virus uses Mac OS X's own SMTP client to send alert messages, so if a user is disconnected from the network, messages will queue until a connection is found, ensuring no alerts are lost. This ensures the administrator is always kept informed, says Sophos.

It also offers a central configuration of update and anti-virus settings, including the ability to manually administer virus identity files. Administrators can create a central installation source and install to all networked Macs automatically using XServer tools such as Network Install to provide automatic updates as and when required.

For users who choose to access the Unix operating system directly on Mac OS X, there is a command line version of Sophos Anti-Virus, allowing administrators to run it through the Mac Terminal utility.

Sophos claims the enhanced security model prevents normal users from disabling anti-virus software. Users need to have administrative rights in order to install and remove Sophos Anti-Virus or change any of the System Preferences, including enabling and disabling InterCheck.

Sophos Anti-Virus product manager Phil Wood said: "Despite the popular misconception that Mac users aren't affected by the virus plague, Apple customers need to take the virus threat seriously. Sophos's latest anti-virus solution ensures all Mac users are protected, whether in the office or on the road, and enables third-party developers to incorporate virus-scanning into their own products."

Customers interested in buying Sophos Anti-Virus must contact Sophos for pricing details.

Sophos Anti-Virus for Mac OS X was first introduced at Macworld CreativePro Conference & Expo in New York last July.