We have one Exchange 2003 server with Outlook 2010 clients. There is one user that's free busy information is not available.
I have done
Outlook /cleanfreebusy on the user's Outlook and from another computer with that user's profile
used MFCMAPI to force the rebuild
took the user out of cached mode
After using the MFCMAPI tool the information is available for a short time and then is gone again. What is preventing Outlook from publishing this?