title: Caching issue causes site goes to IIS splash page
body: <p>My company creates sub-domains for our customers that sign up with us. For the longest time now, we'd create the site (for example <a href="https://foo.domainname.com" rel="nofollow noreferrer">https://foo.domainname.com</a>), and it would go directly to the application. However recently, after creating a site when you go to navigate to it, it just shows the IIS 7 Splash page. After doing a bit of Googling, I found <a href="https://stackoverflow.com/questions/16966439/when-navigating-to-the-site-root-i-get-an-iis-splash-screen">this thread</a>, and it appears to be the case, because when you go to the main page directly, instead of the root, it works. Then after that the root works as expected.</p>
  
  <p>It's great we have a way to help our customers now, however telling our customers to clear their cache and/or navigate to the main page directly is not ideal for many obvious reasons. So considering this is a new behavior, it seems safe to assume something is not working quite right. How do I go about fixing this, because I am stumped.</p>