Universal Email 4 does not support ASP, only PHP.
The error message means that the SMTP server address you entered is not correct, or if it is a valid smtp server address, it is experiencing difficulties.
Your friends over here at WebAssist! These Dreamweaver extensions will assist you in building unlimited, custom websites.
These out-of-the-box solutions provide you proven, tested applications that can be up and running now. Build a store, a gallery, or a web-based email solution.