First off: Our users use Outlook 2003 and our Exchange version is Exchange 2010.
When one of our users sends a meeting request to other users the free/busy field is put on "tentative". The intended receivers accept the meeting request and that meeting shows up in their calendar as a tentative meeting.
Afterwards when the sender has been able verify that the meeting can indeed proceed, she edits the original request from "tentative" to "busy" and sends it again. The other users accept it again, but the free/busy field doesn't change
from "tentative" to "busy". And this happens a lot. Not always. But a lot.
Anyone any thoughts on what could possibly cause this? Or at least any idea as to how and where I can check for error messages, so I can post them here?