Article ID: 2763065 - View products that this article applies to.
Consider the following scenario:
Note If you move many mailboxes to another database at the same time, the move process takes longer than expected.
This issue occurs because the Mailbox Replication service does not check a certain flag when you move the mailbox. Additionally, a move process for a mailbox that fails takes 30 seconds by default. When a move process for a mailbox fails, the Mailbox Replication service tries five more times to move the mailbox. Therefore, there is a 2.5 minute delay for each mailbox move process when you move many mailboxes at the same time.
To resolve this issue, install the following update rollup:
(https://support.microsoft.com/kb/2803727/ )Description of Update Rollup 1 for Exchange Server 2010 Service Pack 3
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.
Article ID: 2763065 - Last Review: June 17, 2013 - Revision: 3.0