| | Re: Exchange 2010 Address book setting for BESX 5.0.2
Look at KB2201.
"Under Microsoft Exchange 2010, SP1, the MaxSessionsPerUser setting is no longer included in the Microsoft.exchange.addressbook.service.exe.config file. In Microsoft Exchange 2010 SP1 the settings are maintained in the Client Throttle Policy. There are 4 RCA entries and they should be set to NULL. If they are not set to NULL run the following CMDLET to set the parameter.
Set-ThrottlingPolicy BESPolicy -RCAMaxConcurrency $null -RCAPercentTimeInAD $null -RCAPercentTimeInCAS $null -RCAPercentTimeInMailboxRPC $null "