Exchange 2007 performance should be similar to Exchange 2000/2003. It is important to understand the following three configurations and their impact on Steelhead's ability to optimize/accelerate.
The first configuration is when Outlook 2007 clients talk to Outlook 2000/2003 servers, the MAPI 2000/2003 protocol is negotiated. Riverbed provides data streamlining and application streamlining for these mixed mode environments.
The second configuration is when Exchange 2007 and Outlook 2007 are used together, a new context of the MAPI protocol is used. Riverbed RiOS software 3.08 and greater or 4.02 and greater is required to get optimization.
The third one is the fact that in contrast to Outlook 2000/2003, Outlook 2007 uses encrypted communications with Exchange server by default.
