If when you reboot Windows Small Business Server 2008/2011, and you notice that some of the Exchange services that are set to automatic start are not started, then this article may interest you.
The problem occurs in some environments when Exchange is installed on a Global Catalog.
Some of the services that may not be started are:
– Microsoft Exchange Information Store
– Microsoft Exchange RPC Client Access (SBS 2011 Server Only)
– Microsoft Exchange Forms Based Authentication (SBS 2011 Server Only)
If you attempt to manually start the services, the services should start correctly. Alternatively, you can check out Microsoft KB940845 article that addresses the issue. The KB article has a Microsoft Fix It link that will adjust the service dependencies on the Exchange Services so that the services will start automatically on a reboot.