Moving from Exchange 2003 to 2010

Hey guys,

We currently have exchange 2003 Enterprise edition with SP2, on a MS Server 2003, and we will like to start preparing for transition to 2010, but i'm not sure where to start? Please give me details as of what i need to do and where i need to begin.
Thank You

JM
J MolinaIT AdminAsked:
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Stelian StanConnect With a Mentor Network AdministratorCommented:
The steps are:
   1. Bring the Exchange organization to Exchange Native Mode.
   2. Upgrade the Exch 2003 to SP 2.
   3. Bring the AD forest and domains to Windows 2003 Functional (or higher) levels.
   4. Upgrade at least one Global Catalog domain controller in each AD Site that will house Exchange to Win 2003 SP2 or greater.
   5. Prepare a Windows Server 2008 (RTM or R2) x64 edition server for the first Exch 2010
   6. Install the AD LDIFDE tools on the new Exch 2010 (to upgrade the schema).
   7. Install any necessary prerequisites (WWW for CAS server role).
   8. Run setup on the Exch 2010 upgrade the schema, and prepare the forest and domains.
   9. Install all the roles (except Edge role)
  10. Transfer OWA, ActiveSync, and Outlook Anywhere traffic to new server.
  11. Create public folder replicas on Exch 2010
  12. Move mailboxes to Exch 2010 using Move Mailbox Wizard or Powershell.
  13. Move the Offline Address Book (OAB) generation server to Exch 2010.
  14. Transfer all Public Folder Replicas to Exch2010 Public folder store(s).
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Here is a good article about that:
part 1
http://exchangeserver2010.com/2010/01/17/transitioning-from-exchange-server-2003-to-exchange-server-2010-1/
part 2
http://exchangeserver2010.com/2010/01/17/transitioning-from-exchange-server-2003-to-exchange-server-2010-2/
part 3
http://exchangeserver2010.com/2010/01/18/transitioning-from-exchange-server-2003-to-exchange-server-2010-3/
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Justin DurrantSr. Engineer - Windows Server/VirtualizationCommented:
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