The Forefront Threat Management Gateway (TMG) 2010 is the successor of ISA Server 2006 and TMG contains a lot of new features that are interesting for Exchange administrators. It is not possible to combine the ISA Server and the Edge Transport Server on one server, let alone combine them with the Forefront Protection for Exchange. You can use a Microsoft ISA Server 2006 in the DMZ, and the ISA Server ‘publishes’ the Exchange Services like OWA, Outlook Anywhere or ActiveSync. For more information regarding the CAS server and the DMZ visit the Exchange Team Site. Locating the Client Access Server is not supported. The Client Access Server give E-mail clients access to their mailbox and the Client Access Server is located on the internal network. By default the Edge Transport Server has the anti-spam functionality enabled, and when Forefront Protection for Exchange is installed the Edge Transport Server also performs the anti-virus functionality.Įmail from the Internet is received by the Edge Transport Servers, spam messages and messages containing viruses are cleaned up and the results are sent to the Hub Transport Server, located in the internal network and domain. When you have an Exchange Server 2010 environment you can use the Edge Transport Server, typically located in the Demilitarized Zone (DMZ) or perimeter network for hygiene purposes.
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