We are experiancing issues with a handful of users where they are local on the network and we cannot turn off the Exchange proxy settings. We uncheck the box in the connection tab hit apply exit out and go back and it is checked off and filled out with all the info again. We just completed a Exchange 2010 upgrade and an office 2007 upgrade. This was not an issue on 2003 since the proxy info saved on this machine has the old server name. Now since we moved we can't even change the server name in the poxy config.
We think there is a local security setting blocking us from making this change but can't find it. We don't see any thing in local GP and have tried this with logging into several users on the same PC with and without admin rights. the same users can log into other workstations with no issues.