When I click on Tools then go to Out Of Office assistant in Outlook 2007, i receive an error message that states the following: Your Out of Office settings cannot be displayed, becuase the server is currently unavailable. Try again later.
This only happens if I am connected to our corporate Exchange Server 2010 using RPC over HTTP. If I am physically connected to the corporate network and therefore connected to the exchange server utilizing TCP/IP, I am able to connect to the Out of Office Assistant. One other thing that I did notice is if I run the Test E-mail AutoConfiguration tool from Outlook while on the corporate network, the tests pass. If I run this tool while off the corporate netowork, I get an error message that says Autoconfiguration was unable to determine your settings. I can do everything else in Outlook while I am connected via RPC over HTTP.
Thanks for your help..