The Compliance Server produces a troubleshooting log file, which is located in the installation folder under Logs. You can change the log level of the service dynamically without having to restart the service.
To change the log level of the service
Click Start, point to All Programs, point to Administrative Tools, and then click Office Communications Server 2007 R2 Group Chat Server.
In the Group Chat Server Configuration Tool, on the Filemenu, click Configure Server Settings.
On the left navigation bar, click System Wide Settings, and then click the Compliance Servicetab.
Select a new log level, and then click OK.