Exchange 2003 > 2010 Query
We have 2010 Exchange setup along side our existing 2003 Exchange box, I have a test account on 2010 and it all works tidy, As part of the migration you have to convert the OAB/Recipient policies and Address books into the new 2010 format.
Will this then render account creation useless via 2003? Will 2003 users still see the address books - presumably over the routing connector they will?
Basically at what point are we forced to move to 2010 for user account management, and how necessary is migrating the mailboxes at this point? Ideally I want to migrate people as and when rather then in bulk.