that is what I have on a forum on free server (without mail server) and using an account with smtp mail is working well ( with authentication)... Check the right ' before the first line 'Set and update fields properties and no ' before the others..
CDONTS is not installed on Windows 2003 by default. You could install it but you would have no reason to. CDOSYS is much better. For a start CDONTS doesn't support authentication. CDOSYS does for free. All the other mail components only support authentication on their paid versions.