Article ID: 971431 - View products that this article applies to.
Consider the following scenario:
Event Type: Error
Event ID : 4999
When the transporter suite migrates the calendar items from some external IMAP servers, it creates calendar items in Exchange with the message class IPM.NOTE. When the IMAP client tries to download these messages, some mime parts are not generated during content conversion. This causes the service to crash. Either the service will crash for every message that the client tries to download, until all messages are tried, or the calendar folder is deleted.
To resolve this problem, install the following update rollup:
(http://support.microsoft.com/kb/971534/ )Description of Update Rollup 1 for Exchange Server 2007 Service Pack 2
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.
For more information, visit the following Microsoft Web site: