Managing Diagnostic Logging with Exchange Server 2007

For those familiar with the GUI interface for Exchange Server 2003 diagnostic logging the new Exchange Server 2007 diagnostic logging cmdlets might seem a little daunting at first.  But with a little PowerShell understanding they become much easier to manage.  Lets take a look at a few examples.

First of all the two shell cmdlets we are going to use are Get-EventLogLevel and Set-EventLogLevel.  Each does what the name suggests, and can be combined to manage multiple diagnostic logging items quickly and easily. The -Level parameter of each cmdlet determines what level of diagnostic logging is displayed. The levels you can choose are 0 (Lowest), 1 (Low), 3 (Medium), 5 (High), and 7 (Expert). Usually level 5 (High) is adequate but sometimes you will want level 7 (Expert). The default level is 0 (Lowest) and should always be reset once your troubleshooting is complete.

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http://www.capslockassassin.com/2009/02/23/managing-diagnostic-logging-with-exchange-server-2007/