Help with Android OS and Exchange 2013

Hi all,

I am getting some issues when trying to connect my nexus 4 to my mailbox.

All the DNS records looks good and I can see on the firewall the traffic passing through to my exchange server. 

On the exchange connectivity test site I am getting the following error:

	Attempting to send an Autodiscover POST request to potential Autodiscover URLs.
	Autodiscover settings weren't obtained when the Autodiscover POST request was sent.
	Test Steps   ExRCA is attempting to retrieve an XML Autodiscover response from URL https://nansoz.com/AutoDiscover/AutoDiscover.xml for user XXXXX@nansoz.com.   ExRCA failed to obtain an Autodiscover XML response.   Additional Details

Any ideas what this means? :)