This is a weird issue;
I have a Exchange 5.5 server and a Exchange 2000 server. If a member of e2k creates a meeting with a member on 5.5, the member on 5.5 accepts and the meeting goes into their calander. Now if another member on e2k then tries to check the availability of that person in 5.5, that person appears free.
I think i have located the root of the issue although am looking for alternatives to my thought of fixing this issue. The free/busy service is not started on 5.5 and it has not been running for a year or so. This has never been an issue since this was the only server in my org and the free/busy didnt need to run. I think the connector is messed up. If i try to start the service i get a logon failure, and yes i have carefully made sure the service account is correct and that it has all the correct privelages and that it has the correct password. The service just wont start.
My thoughts are to remove the service and re-add the connector. I dont want to do this unless necessary. Any thoughts?