For each policy group, you can specify virus policies. Symantec Brightmail Gateway comes with preconfigured virus policies that are enabled by default. When you select virus policies for a policy group, you select from these preloaded policies.
By default inbound and outbound email messages containing a mass-mailing worm, and unscannable messages, including malformed MIME messages, will be deleted. If you are concerned about losing important messages, you may want to create a different filter policy for unscannable messages and apply that new filter policy to some or all of your groups.
To select virus policies for a policy group