The System Notification Email Addresses section of the System Settings page is used to define default notification addresses. The email system can automatically send notifications of system events like a stopped service to a predefined address, often an administrator address. When this address is defined, notification messages can also be sent to or from an administrator email address for other events. For example, configuring a notification to be sent to or from an administrator address when a message triggers a filter (on the page Main > Policy Management > Actions) requires the administrator address to be defined on the page System Settings.