Type the address of your SMTP mail server. (You only need to specify the port if it differs from the default SMTP port 25.) Enter a "From" email address from which the emails should be sent. Optionally enter a "bounce" address to which delivery failure notifications should be sent if the Alert emails can't be delivered to one or more Users. If your SMTP mail server requires outgoing authentication, enter the username and password credentials. Select STARTTLS if your SMTP server supports the protocol.
Once you've entered the necessary information, use the Test SMTP Settings to test the settings.