Outlook Mac Loses Connection to Exchange Server

Hi All,

I have also posted this to the Exchange server board, but thought it might be appropriate to post here as well.

I've had this problem pretty since deployment a couple of weeks ago, so I'm hoping some one can point me in the right direction.  I'm running Exchange 2013 on a Server 2012 Standard box with the DC running on a different box, every thing up to date.

Mac clients running Outlook 2011 (14.4.2).

Periodically throughout the day, Outlook loses connection to Exchange server.  After several minutes, it will connect back up, and seems to operate normally.  During the down time, I am able to connect to OWA, and ActiveSync seems to work as well.

If I run the Remote Connectivity Analyzer while Outlook is responding, I get no errors and the "Connectivity Test Successful" message.  However, if I run it while Outlook is NOT responding, I get the following:

Exchange Web Services synchronization, notification, availability, and Automatic Replies.
Not all tests of Exchange Web Services tasks completed.
Creating a temporary folder to perform synchronization tests.
Failed to create temporary folder for performing tests.
Exception details:
Message: The request failed. The operation has timed out
Type: Microsoft.Exchange.WebServices.Data.ServiceRequestException
Stack trace:
at Microsoft.Exchange.WebServices.Data.ServiceRequestBase.GetEwsHttpWebResponse(IEwsHttpWebRequest request)
at Microsoft.Exchange.WebServices.Data.ServiceRequestBase.ValidateAndEmitRequest(IEwsHttpWebRequest& request)
at Microsoft.Exchange.WebServices.Data.MultiResponseServiceRequest`1.Execute()
at Microsoft.Exchange.WebServices.Data.ExchangeService.BindToFolder[TFolder](FolderId folderId, PropertySet propertySet)
at Microsoft.Exchange.Tools.ExRca.Tests.GetOrCreateSyncFolderTest.PerformTestReally()
Exception details:
Message: The operation has timed out
Type: System.Net.WebException
Stack trace:
at System.Net.HttpWebRequest.GetResponse()
at Microsoft.Exchange.WebServices.Data.EwsHttpWebRequest.Microsoft.Exchange.WebServices.Data.IEwsHttpWebRequest.GetResponse()
at Microsoft.Exchange.WebServices.Data.ServiceRequestBase.GetEwsHttpWebResponse(IEwsHttpWebRequest request)
Elapsed Time: 100141 ms.

Nothing I've attempted to do so far as had any meaningful impact, and I am fairly new to Exchange.

Following the adice I've seen online so far, I've:
I've made sure the auto discover in DNS points to the Exchange server.
I've disable auto-discover on the client, manually adding accounts, tried using their FQDN, local IP, LAN IP.
I've made exceptions to the proxie on the client.

Just not sure where to look next?  Appreciate any advice out there.

Thanks,

Michael