Hi Damien,You are correct in stating that Riverbed proxies TCP connections, but both Juniper and Silver-Peak do not proxy connections. They work differently. Those vendors have products that rely on explicit tunnels between WAN acceleration peers. ...
You should also investigate Riverbed's WAN optimization solution as they have the most robust platform for Exchange 2000/2003/2007 optimization and acceleration. They have hundreds of customers using their Steelhead appliances to accelerate Exchange...