You need to prepare the Exchange organization for the installation of Exchange Server 2007

You are the messaging engineer for your company. Your company has migrated from Microsoft Exchange 5.5 Server to Microsoft Exchange Server 2003. One Exchange 5.5 Server remains on the network. Your company plans to transition to Exchange Server 2007 and expects a period of coexistence with previous versions of Exchange Server. You need to prepare the Exchange organization for the installation of Exchange Server 2007. What should you do? (Each correct answer presents part of the solution. Choose two.)

You are the messaging engineer for your company. Your company has migrated from Microsoft Exchange 5.5 Server to Microsoft Exchange Server 2003. One Exchange 5.5 Server remains on the network. Your company plans to transition to Exchange Server 2007 and expects a period of coexistence with previous versions of Exchange Server. You need to prepare the Exchange organization for the installation of Exchange Server 2007. What should you do? (Each correct answer presents part of the solution. Choose two.)

A.
On a domain controller, run setup.exe /PrepareLegacyExchangePermissions and setup.exe /PrepareAD from the Exchange Server 2007 source files.

B.
On an Exchange Server 2003 server, run setup.exe /roles:Mailbox /LegacyRoutingServer from the Exchange Server 2007 source files.

C.
Decommission the Exchange 5.5 server from the network and remove all Active Directory connectors.
Upgrade the Exchange organization to native mode.

D.
On the Exchange 5.5 server, run the installation program for Exchange Server 2007.

E.
Modify the Recipient Update Service for the Exchange organization to point to a server that will be installed with Exchange Server 2007 server.

Explanation:
When transitioning from legacy Exchange to 2007, you must first grant specific permissions in each domain where DomainPrep was run. To do this, run Setup /PrepareLegacyExchangePermissions. This enables Exchange 2003 RUS to function correctly after the AD schema is updated for 2007. Run this command in the root domain of the AD forest. Setup must be able to reach a DC running Server 2003 SP1 or later.

http://technet.microsoft.com/en-us/library/bb125224.aspx

Exchange 2007 requires that both the Schema master and GC servers be running Server 2003 SP1 or later and that the DFL be at least 2000 native mode. If installing 2007 into an existing organization, set the Exchange mode to native. This means no Exchange 5.5 servers anywhere. If there are any such machines, they must be upgraded to 2000/2003 or completely eliminated.

http://www.msexchange.org/tutorials/Installing-Exchange-2007-Part1.html



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