We have already demonstrated how to configure OWA (Outlook Web Access) as the default web page in IIS6 / Exchange 2003:
How to Configure OWA as the Default Web Page

Now, we would like to demonstrate a similar Screencast about Exchange 2007 on Windows Server 2008 scenario.
Instead of configuring a redirection on the Default Web Site, and removing the inherited redirection from the included directories (which might be quite tedious and especially difficult for the Exchange Virtual Directories), we offer a much simpler and elegant approach.

Step 1 First, we address the scenario, when the users are typing https://yourexchangeserver without adding /owa after it. The configuration is straight forward, and we test the result at the end.

Step 2 Next, we address another common mistake – trying to access OWA through non encrypted (http) page. As the default Web Site is configured to require SSL encryption, the result is a 403 Server Error, Forbidden: Access is denied.