After you perform a dial tone recovery on a Microsoft Exchange Server 2007 server, a user tries to open or accept a new meeting request. In this situation, the user receives one of the following error messages:
The message could not be opened. Cannot open this item. The end date you entered occurs before the start date.
Cannot open this item. Outlook does not recognize this Schedule+ recurrence pattern.
Additionally, if the Reading Pane is enabled, a user may see the following warning in the Reading Pane:
This item cannot be displayed in the Reading Pane. Open the item to read its contents.
This problem occurs in Microsoft Office Outlook and in Microsoft Office Outlook Web Access.