To prevent spam and mail abuse, most Internet Service Providers who offer email services will require authentication for mail relay. To configure WinRoute to authenticate when sending outgoing mail

1. Go to Mail Server->Advanced tab window

2. Enter desired host name into the Internet host name field. This value is not necessary, however it is recommended because it is used to identify the WinRoute mail server to other mail servers.

If your ISP does require authentication they must provide you with this information. Usually if you have at least one POP3 account you can use these credentials within the SMTP Authentication option shown above.