Several users in our company have complained about a problem with the
following symptom:

When meeting requests are received in the inbox they do not populate the
calendar at all until the meeting request is opened in the inbox.

The anticipated behavior is that a function in Outlook called a sniffer
shall scan the inbox regularly for new meeting requests and copy them to the
calendar as a tentative meeting. Typically a received meeting request appears
in the calendar within 10 to 15 minutes.

We have found the following to resolve this problem:

All user experiencing this problem have delegated access to one or several
other users. By TURNING OFF the feature "Delegate receives copies of
meeting-related messages sent to me" incoming meeting requests are again
copied correctly to the calendar automatically. You can find this option as a
checkbox in [Tools] - [Options] - [Delegates] - [Permissions].

Thanks,
Lars Johansson