The EX appliance can send email notifications when the installed security content becomes outdated. Email notifications for outdated security content have the following requirements:
The email server is configured to send notifications for failure-level system events.
Automatic security content updates are enabled.
Email recipients who need to know about outdated security content are configured to receive notifications for failure-level system events.
You can use the appliance Web UI or CLI to configure email notifications for outdated security content:
Email Security - Server > Email Security - Server User Guide Release 11.x > Configuration > Configuring event notifications > Configuring event notifications using the Web UI