Exchange 2007 & 2010 use a different message routing design than Exchange 2003. This is an important aspect to understand when transitioning from Exchange 2003 upwards due to the change in behaviour.
TechNet has articles that discuses these concepts :…
Some featured white papers on the Exchange TechNet site:
Technical White Papers for Exchange Server 2010
White Paper: Understanding the Relative Costs of Client Access Server Workloads in Exchange Server 2010
White Papers: …
Remote Desktop Connection Manager (RDCMan) is a great tool to consolidate multiple RDP connections into a single window to prevent desktop clutter.
Update 19-11-2014: RDCMan 2.7 is now available. Please see here.
Update 29-3-2017: 2.2 is no longer available …