I am investigating FREE/Busy time issues right now. In order to see what is going on I want enable the Connectivity Logging on the Exchange Server. To do this you can do one of two things. There is a graphical way of doing it as well as the Powershell way of doing it. I am doing this in Exchange 2007.
Graphical way of enabling Connectivity Logging in Exchange Server:
Open the Exchange Management Console
Find the server that has the “Edge Transport server role installed”. If you only have one exchange server install this should be pretty easy to find. Select the server in the “Hub Transport” section.
Once the server has been selected the Action Pane should change. Select Properties as seen below.
Find the “Log Settings” tab and check off “enable connectivity logging” and hit “OK” to save the changes. *NOTE* Make sure to note where the log folder is located.
How to enable Connectivity logging in Exchange Server via Powershell script
Set-TransportServer <ServerName> -ConnectivityLogEnabled <$true | $false>
Real World ExampleSetTranportServer Exchange07.domain.com - ConnectivityLogEnabled $true