I'm trying to bind a IIS web site to a subdomain, which is causing authentication errors. First I'll explain what I've done to set it up. This is the fist time I do this, so please correct me if I'm wrong.

The web server is a stand-alone Windows Server 2008 R2 x64, running IIS7 with .NET Framework 4.

I have the following A-records, pointing to my server:

• server.mydomain.com
• *.server.mydomain.com

So all subdomains of server.mydomain.com points to the server. In IIS7 I have a web site on port 8080, with a virtual directory (named virtual) that is using Windows Authentication.

I have one binding on the web site pointing to all unassigned IP addresses, port 8080 and having a host name of sub.server.mydomain.com.

Now, shouldn't I be able to access the virtual directory through:

http://sub.server.mydomain.com/virtual

That is not working. However, I can access it through:

http://sub.server.mydomain.com:8080/virtual

But, it won't let me authenticate using a Windows account (Server\Username). A windows account that I can authenticate with, when accessing the site through http://localhost:8080/virtual.

What am I missing here?