I tried asking this question in Outlook and found no luck thus posting here.
We have a Windows 2003 domain with Exchange 2003 in frontend backend topology. All our clients are Vista with Outlook 2007. It appears for certain users appointments fall off. Please find below the scenarios:
1. User as delegate to his manager creates an appointment from his computer and send it out to internal/external domains.
2. User receives responses to the appointment he sent.
3. User modifies either time or location of the event and sends out appointment. People receive the requests and responds to the modification.
4. Minutes later user visits his calendar and the appointment disappeared.
This is not domain wide issue and we noticed it with about 5 users. These 5 five users have no common relation like in same department, same appointment etc. I will appreciate any advices to troubleshoot this issue.
Thanks in advance