Moving users from Exchange 2003 to Exchange 2007
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We are in the process of consolidation of Exchange servers in the organisation. We are having one Blackberry server and one Exchange 2003 server in Dubai. Also one Blackberry server and two Exchange 2007 servers in India. We are moving dubai Exchange 2003 users to India Exchange 2007 server in multiple lots. We cannot move all users at once. BESadmin dubai account is used in dubai bb server and BESAdmin ind account is used bb server in India bb server. We want to remove Exchange 2003 once all users are moved to Exchange 2007. We will keep Dubai BB server as it is and demote Exchange 2003.
I have added users in Dubai BB and moved user's mailbox to India. When I am configuring user device, it keeps running retrying mode. How to proceed in this or is there any step by step guide to do so?
Thanks in advance.