You didn't mention what version of Exchange, nevertheless free/busy info is local to the Exchange environment either through public folders in Exchange 2003 or the CAS server in Exchange 2007. This is not shared across different domains. Users have to all be on the same domain to view this info. This is Exchange working as designed.
Last Wiki Answer Submitted: December 9, 2010 9:43 pm by Technochic56,975 pts.
All Answer Wiki Contributors: Technochic56,975 pts.