Setup SMTP Server for Alerts

Go to Alerts -> Alert Settings
Select the Email Alerting tab
Under Primary SMTP Server, enter the Hostname and Port Number for the SMTP server
Enter the User ID (in the form of a valid email) for the SMTP server (Note: You must enter a valid email address located in the Directory even if your server does not require authentication)
Enter the Password for the SMTP server (this is optional if your server does not require authentication)
Select the checkbox to the left of Requires Authentication if your SMTP server requires authentication
You can enter a second SMTP server (optional) for failover under Secondary SMTP Server section
Click OK to save the changes