I recommend this Exchange health check script!!!

Download Paul Cunningham’s new script: http://exchangeserverpro.com/powershell-script-health-check-report-exchange-2010

Paul Cunningham has released a totally overhauled and updated version of the Exchange 2010 mailbox server health check script that addresses those problems. Before you run the script please read the guidance here http://exchangeserverpro.com/powershell-script-health-check-report-exchange-2010, watch the demo video, and check the known bugs and FAQ at the end of this article for current issues