An SMTP feed basically means that you host your own email server in your office or home at the end of your internet connection.

We would recommend that only those with a broadband connection attempt to use a mailserver that is in your office/home.

You will need to consult the documentation for your mail server as to the specifics of how to setup your server. It also your responsibility to make sure that your server is not an open relay.

The MX records for your domain will now need to be modified, If your Domain/DNS is hosted with us please contact technical support and inform them that you need to have a SMTP feed. We will test that your server is contactable and update your DNS records as needed.