Please attach a copy of the page and I can take a look.
If two email server behaviors are on the page, that means the page is sending two emails. If you only need one, then delete the other from the page using the server behaviors panel.
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.