Symantec Messaging Gateway relies on up-to-date information to detect viruses and threats. One of the most common reasons that problems occur is that virus definition files are not up-to-date. Symantec regularly supplies the updated virus definition files that contain the necessary information about all newly discovered viruses and threats. Regular updates of that information maximize security and guard your organization against infections and the downtime that is associated with an outbreak.
Every 10 minutes, Symantec Messaging Gateway polls Symantec servers to see if updates are available. If they are, that information appears on the Status page. However, updates are only downloaded based on the schedule that you specify. Or you can download definition updates manually.
You can use Rapid Response when you need quick responses to emerging threats. Rapid Response definitions are most useful for a perimeter defense to mitigate quickly spreading threats. Rapid Response is an alternative to LiveUpdate.
Rapid Response definitions are created when a new threat is discovered. Rapid Response definitions undergo the basic quality assurance testing by Symantec Security Response. They do not undergo the intense testing that is required for a LiveUpdate release. Symantec updates Rapid Response definitions as needed. They respond to high-level outbreaks and might be made available before the LiveUpdate definitions quality assurance process is complete. They can be augmented later on by more robust detection capabilities in certified definitions.
Rapid Response definitions are automatically updated every 10 minutes. You cannot schedule Rapid Response updates.
Rapid Response definitions do not undergo the same rigorous quality assurance testing as LiveUpdate definitions. Symantec encourages users to rely on the full quality-assurance-tested definitions whenever possible. Ensure that you deploy Rapid Response definitions to a test environment before you install them on your network.
You can select the source from where you want to obtain virus definitions. If your organization has several appliances, you can obtain definitions on an internal server. Then you can disseminate the definitions to all of your Symantec Messaging Gateway appliances. This configuration lets you limit the amount of Internet traffic that accesses Symantec LiveUpdate. In this scenario, you must specify the information for the LAN host and proxy, if required.
You must have a valid content license to install definition files. A content license is a grant by Symantec Corporation for you to update Symantec corporate software with the latest associated content, such as new definitions. When you do not have a content license or your license expires, your product does not receive the most current definitions. Your environment is vulnerable to attacks.