Web Server

I have a web server (Windows Server 2003 Web Edition w/ IIS) that I would like to be a dedicated web host. I also have the domain name and its ip address. However, when I try to set access the site, it comes up with the “Page Cannot Be Displayed” page. The domain name used to be hosted on a commercial web host. However, I ended all web hosting services except for e-mail. I think that the e-mail services may be conflicting with my ability to host the web site from my personal web server. Can someone please confirm or refute my claim?