We will describe in this post how to set up Threat Management Gateway in a domain located in the perimeter network (DMZ) in order to publish your Outlook Web Access external URL and ensure a secure SSL connection. The OWA site is installed on the CAS servers of your Exchange infrastructure. The internal URL, registered in your private DNS, is being accessed by the computers in your internal network which are members of your domain. The external URL, registered in your public DNS, is being accessed by any computer connected to the internet, which obviously is not necessarily a member of your domain. To get both internal and external URL launch the following command on the Exchange Management Shell:

Get-OwaVirtualDirectory | ft server,InternalURL,externalURL

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You can’t wait to install Windows server 8 developer preview in order to test it in the event of a future deployment… But you might want to finish your migration to ADDS 2008R2 before thinking about all that 😉 Bellow is a tab showing some client compatibility issues and the important steps when migrating your domain controllers to Windows server 2008R2:

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In this post we will describe some issues we had when extending the schema for Active 2008 or 2008R2. The steps to prepare the schema for AD 2008 are described in this askDS post.
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