Users do not receive new messages if they use IMAP4 clients to access mailboxes that were moved to another Exchange Server 2010 RU1 server
- You install Update Rollup 1 for Microsoft Exchange Server 2010 on computers that are running Exchange Server 2010.
- You move mailboxes from one server to another server within the same database availability group.
- Users use IMAP4 clients to access the mailboxes.
Note This problem does not occur when users access the mailboxes that were moved by using Microsoft Office Outlook in MAPI mode or by using Microsoft Office Outlook Web Access (OWA).
NoteOnce a mailbox has been moved to an Exchange Server 2010 server before the hotfix is installed, the Unique Identifier (UID) attributes on the messages is broken because the hotfix keeps the old UID attributes during the mailbox moving process. To fix the problem on the affected mailbox, you can use an Outlook client to move all the messages from the Inbox folder to a new mail folder and then move them back to the Inbox folder. This behavior will rewrite the UID attributes correctly and the new messages should start to work.
For more information about the Unique Identifier attribute and UIDNEXT attribute, visit the following IETF Web site:
Article ID: 979480 - Last Review: 03/04/2010 23:55:47 - Revision: 1.2
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