Hi all, As per topic, could you please answer my question? Thanks a lot.Never stop learning

If you have set a retention time or left the default (Keep deleted mailboxes for days ..), the mailbox has been disconnected, but is likely not deleted. You will still be able to either restore or recreate that user and reconnect her to the disconnected mailbox. Depending on the Exchange version, the procedures are different, but in concept identical. HOW TO: Reconnect a mailbox to another user (Exchange 2003) http://exchangepedia.com/2006/03/how-to-reconnect-a-mailbox-to-another-user.html Reconnecting Mailboxes Managing mailboxes in Exchange Server 2007 (Part 2) http://www.msexchange.org/tutorials/Managing-mailboxes-Exchange-Server-2007-Part2.html How to Reconnect a Disconnected Mailbox in Exchange Server 2010 http://exchangeserverpro.com/reconnect-disconnected-mailbox-exchange-server-2010MCTS: Messaging | MCSE: S+M

Yes, you can restore the AD object and then re-connect the mailbox to the account. How to restore deleted user accounts and their group memberships in Active Directory http://support.microsoft.com/kb/840001 Xiu

Thanks a lot Jon and Xiu Zhang. You guys are very kind and helpful, much appreciated.Never stop learning