11-10-2008 07:54 PM - edited 11-10-2008 07:59 PM
So, RIM posted an article: KB13268 - How to migrate from Microsoft Exchange Server 5.5 to Microsoft Exchange Server 2007
Unfortunately Microsoft doesn't support a direct migration from Exchange 5.5 to Exchange 2007. In fact you cannot install an Exchange 2007 server into your Exchange organization if an Exchange 5.5 server is present. The Exchange organization needs to be in 2000 native mode before installing your first Exchange 2007 server; which precludes any Exchange 5.5 server from being in your organization.
That said, you'd need to install Exchange 2000 or 2003, move mailboes to that server(s), decommision the Exchange 5.5 server, and then you can proceed with setting your Exchange Org to native mode and installing your first Exchange 2007 Server (hopefully that'd be your first CAS, per MS's recommendation).
... but what if you don't want to do this ... You could use something from Quest Software to migrate you directly from 5.5 to 2007; but it certainly won't be free. And then, can you use the procedure RIM has outlined in the KB article linked above ... well kinda. All except for step #7.
So without further ado, the KB article:
The following permissions for the BlackBerry® Enterprise Server service account must be specified on the new Microsoft Exchange Server through the 2007 Exchange Management Shell:
Upgrade the Messaging Application Programming Interface subsystem and allow permissions on the Microsoft Exchange Server 2007
To upgrade the Messaging Application Programming Interface (MAPI) subsystem and allow permissions on the Microsoft Exchange Server 2007, complete the following steps:
Add-exchange administrator "<BESAdmin>" -role ViewOnlyAdmin
set-mailboxserver "<messaging_server_name>" | add-adpermission -user "<BESAdmin>" -accessrights ExtendedRight -extendedrights Send-As, Receive-As, ms-Exch-Store-Admin
To verify that the permissions have been assigned to the BESAdmin account, type the following command, where <messaging_server_name> is the name of the Microsoft Exchange Server 2007 and <BESAdmin> is the name of the BlackBerry Enterprise Server service account:
get-mailbox server <messaging_server_name> - add-adpermission -user "<BESAdmin>" -accessrights GenericRead, GenericWrite -extendedrights Send-As, Receive-As, ms-Exch-Store-Admin
Important: Restarting the BlackBerry Enterprise Server will delay email message delivery to BlackBerry smartphones. For more information, see KB04789.
add-exchangeadministrator BESAdmin -role ViewOnlyAdmin
set-mailboxserver <Exchange2007> | add-adpermission -user <BESAdmin> -accessrights GenericRead, GenericWrite -extendedrights Send-As, Receive-As, ms-Exch-Store-Admin
BlackBerry Enterprise Server software version 4.1.3 and later are supported for Microsoft Exchange Server 2007.
During the Microsoft Exchange Server 2007 installation, choose the option to allow Microsoft® Outlook® 2003 and earlier versions when prompted.