This article covers the various methods that can be used to manage email addresses for multiple users in Exchange Server and Office 365.
When moving an Exchange 2013 mailbox to a database that is excluded from provisioning you receive an error.
How to use move requests and migration batches to move Exchange Server 2013 on-premises mailboxes.
A look at the behaviour of the ServerName attribute for mailboxes in an Exchange Server environment.
Exchange Server 2010 treats some object attributes differently than Exchange Server 2003. The most common issue that this causes is invalid aliases on mailbox users.