How Do I Disable Current Outlook Config in Group Policy - Server 2008 SBS

We have a domain running on Windows Server 2008 SBS. We used to use the built-in Exchange to manage our email. However, we have now migrated our email system over to Office 365.

We are having a problem configuring Outlook 2010 on the client workstations to use Office 365. We tried creating new Mail profiles that point to Office 365. However, as soon as the user logs out of Outlook and logs back in, Outlook reverts back to using the old mail profile that points to the local Exchange server (which of course, no longer receives email since the MX records are pointing to Office 356). Looks like there must be a Group Policy in AD that keeps pushing out that original (and now obsolete)  Outlook configuration to each work station.

We need to find that GPO Outlook setting and disable it. Assume this will be done be modifying the GPO, but don't have any experience modifying GPO.

There may also a client side app/setting that is being used to configure SBS clients. If so, we will need to disable that as well.

Thanks in advance.
anuneznycAsked:
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David Johnson, CD, MVPOwnerCommented:
check your autodiscover records
https://testconnectivity.microsoft.com
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Vasil Michev (MVP)Commented:
The registry keys (they correspond to the GPO settings) you need to update are listed here: http://support.microsoft.com/kb/2212902

You can block everything apart from the HTTP redirect method, as that's what O365 will use.
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James NewportCommented:
You need to disable auto discover on your SBS box. You can use

Ok heres what I did to disable auto discover
Open EMS
Run the following cmdlet Get-ClientAccessServer
Set-ClientAccessServer -Identity "CASxx" -AutoDiscoverServiceInternalUri $NULL

Where "CASxx" is the name of the CAS server that was discovered in step 2
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anuneznycAuthor Commented:
Thanks for all the suggestions, Guys. I will have access to this server after close of business today.

@relnyonit By EMS, you the mean the Exchange Management Shell? I don't think that component is installed on our SBS server.
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anuneznycAuthor Commented:
I have also been told that Small Business Server has a group policy object that is forced on clients that configures the exchange stuff on each workstation.

We have to stop the GPO from pushing out that client app.
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James NewportCommented:
I'm sure the ems is installed by default on sbs

I did this when we migrated to o365 and it works no problems
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anuneznycAuthor Commented:
@relyonit Thanks. Do you know the command I can use to launch EMS directly from the Run command or command prompt?
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