The provided uri did not return any service endpoints CRM 2011 outlook plugin

Hi, 

Our Dynamic CRM 2011 works all fine in web browser but it shows error when we try to configure the outlook plugin to connect with CRM. 

The error says that The provided uri did not return any service endpoints. I think the discovery service is not reachable as per the error log. When i go to settings>Customisation>Developer tools>discovery service with following url https://crm2011.jobfutures.com.au/XRMServices/2011/Discovery.svc but it shows error. 

An error has occurred.

Try this action again. If the problem continues, check the Microsoft Dynamics CRM Community for solutions or contact your organization's Microsoft Dynamics CRM Administrator. Finally, you can contact Microsoft Support.

 I have attached the error log below.

http://pastebin.com/hzjWBJ8w

Any help will be much appreciated.