By default, AutoPilot uses SMTP port 25. If you need to configure a custom SMTP port , follow the steps below.
Open the domain.properties file located in the AutoPilot installation directory.
Set the value of the following variable to the desired port:
sensor.default.email.port=<desired_port>
Save the domain.properties file.
Open the Enterprise Manager and navigate to Policy Manager.
Under the Email tab, set the same SMTP port.
Close and relaunch the Enterprise Manager.
Restart the Domain Server to apply the changes.
After completing these steps, AutoPilot will use the configured SMTP port for email notifications.