Nothing was coming up when browsing to the enrollment page. Does QMX install an 'mdm' site in IIS? Thnking that something was wrong with my test environment, I tried installing this in a different environment: SCCM 2007, QMX on a separate box running Server 2012. I have done the configuration settings as per the framework installation instructions. I have installed the Android extension and noticed in those set of instructions that IIS is required. The framework instructions did not say that IIS should have been installed before installing the framework. Is this possibly why I cannot browse to the enrollment page: https://<external_qmx_host_name>/mdm/
I ran the SCCM Connectivity Tests and all of the connections to the SDK, SCCM Site, and registering the MPAPI ISV proxy were successful.