The recently release Release Candidate (RC) version of Exchange 2010 also has available the Management Packs for System Center Operations Manager. Unfortunately it does not have any documentation available!
To configure System Center Operations Manager (SCOM) to work with the RC version of the management packs you need to enable proxying of the agent, or you will just be left with each Exchange Server listed, but showing “Not Monitored”.
So install your agents to your Exchange Servers and wait until they appear under the Agent Managed node of the Administration view. Right-click the agent and choose Properties. Change to the Security tab and tick the box “Allow this agent to act as a proxy…” and click OK. Finally restart the System Center Management service on the Exchange Server (net stop healthservice | net start healthservice).
Then each Exchange Server will begin to report issues with the installation within 15 minutes.