you seem to be using an additional script in contact_.php to send the email to the domain user, edit the universal email instance and add the domain user to the to list.
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.