Server - enter the SMTP server address
Port - enter the correct SMTP port for the mail server (25 by default)
Username (with domain) - username for the email account to be used for sending
Password - password for the email account to be used for sending
Retype password - re-enter password
Enable SSL - enable this checkbox if SSL authentication is require by the mail server
Send test e-mail - verifies SMTP settings by sending a test email to the account designated above