07-06-2009, 07:39 AM
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| | BES co-existence during an Exchange 2003 to Exchange 2007 migration
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I'm migrating our Exchange environment from 2003 to 2007 & am really confused about what I need to do with BES 4.1 in this process! I have the 2007 servers configured & running in the same domain as the 2003 servers & I have successfully moved some test users from 2003 to 2007 (success in terms of sending/receiving email through Outlook). I have now migrated my user account from 2003 to 2007 & am having issues with my BlackBerry as it isnít reconciling fully & Iím not receiving all of my Emails on the device. I have followed the steps outlined in KB12483 but am still having issues.
I have read about removing Exchange 2003 System Manager from BES & installing the MAPI & CDO clients on BES but it seems that this is done after all the users have been migrated, is this the case? I canít move all users in one go so need to run BES/Exch2003/Exch2007 together, has anyone done this? If so could you please advise how you did this as Iím a little lost here!!