You can manage multiple email appliances from the Settings > General > Email Appliances page without having to log on to each machine separately. Managed appliances share a single Log Database, from which email log entries, presentation reports, and the dashboard statistics and charts are generated. The Email module and all appliances must share supported versions and subscription key for successful communication among the appliances.

An appliance may operate in standalone mode, which is the default mode when an appliance is added to the Email module. You can also create appliance clusters by designating an appliance as a primary machine or as a secondary machine associated with a primary machine. See Designating a primary appliance in a cluster for more information about appliance clusters.

The Email Appliances page lists all current system appliances in a table that shows the appliance hostname, platform, system communication IP address, system connection status, and mode. It also contains an Action column, with links that allow you to switch to a different appliance (Launch) that is in standalone mode or remove an unconnected primary appliance from a cluster (Remove). When a primary appliance is removed, all its secondary appliances change to standalone mode. The current appliance and all secondary appliances have an Action entry of N/A.

To add an appliance to the appliances list in the Settings > General > Email Appliances page:

When you add an appliance, it is automatically registered with the Data module for data loss prevention (DLP). To complete the registration process and deploy DLP policies, click the Data module on the TRITON console toolbar and then click Deploy.

You can remove an appliance from the appliances list by selecting the appliance and clicking Delete. Note that you cannot delete an appliance that is being accessed by another user. Once you remove an appliance from the list, you cannot manage it from the Email Appliances page.