After talking with Ray, I was able to confirm that you should only be entering the domain without the prefixing protocols... so like you said - either "domain.com" or "subdomain.domain.com."
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.