Sharepoint responding with two different pages for http and https URL

Hi

Have setup Sharepoint 2013 Foundation, one web application, associated to one web application pool and have only one site collection setup. I've setup alternative access mappings so we can access with a easy to remember URL. Have also setup for access via SSL URL.

For example

http://myintranet.company.com

https://myintranet.company.com

Both URL's have been added to the bindings in IIS. THe weird thing is that each URL resolves to a completely different web page (even though the URL in the browser still shows the same for both 

https://myintranet.kwdoggett.com.au/SitePages/Home.aspx

and

http://doghouse.kwdoggett.com.au/SitePages/Home.aspx