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Transition Single Exchange 2003 server to Exchange 2010

Hello, we currently have an exchange 2003 server that needs to be replaced. It is a DC, although we have other DCs in the domain. We also have an existing exchange 2010 server that someone tried to transition to in the past and gave up. First, how do I transition to a single server 2010 setup? What do I need to do at the firewall level? What about Active Directory? And what do I need to do at our spam filtering solution? (MXLogic) Also, the 2003 server provides DNS and DHCP, how can I transition those roles away from the 2003 server? Finally, how do I remove the remnants of the old 2010 and 2003 servers? Thanks!
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indigo6
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indigo6
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3 Solutions
 
Tony GiangrecoCommented:
Here is a great step by step outline of the migration path you mentioned above. The link to the full document is below the outline.

The sequence for a migration from Exchange 2003 to Exchange 2010 is as follows:
1. Bring the Exchange organization to Exchange Native Mode.

2. Upgrade all Exchange 2003 Servers to Exchange Server 2003 Service Pack 2.

3. Bring the AD forest and domains to Windows Server 2003 Functional (or higher) levels.

4. Upgrade at least one Global Catalog domain controller in each AD Site that will house
Exchange Server to Windows Server 2003 SP2 or greater.

5. Prepare a Windows Server 2008 (RTM or R2) x64 edition server for the first Exchange 2010 server.

6. Install the AD LDIFDE tools on the new Exchange 2010 server (to upgrade the schema).

7. Install any necessary prerequisites (WWW for CAS server role).

8. Run setup on the Exchange 2010 server, upgrade the schema, and prepare the forest and domains. (Setup runs all in one step or separate at the command line.)

9. Install CAS server role servers and configure per 2010 design. Validate functionality.

10. Transfer OWA, ActiveSync, and Outlook Anywhere traffic to new CAS servers.

11. Install Hub Transport role and configure per 2010 design.

12. Transfer inbound and outbound mail traffic to the HT servers.

13. Install Mailbox servers and configure Databases (DAG if needed).

14. Create public folder replicas on Exchange 2010 servers using pfmigrate.wsf script,
AddReplicatoPFRecursive.ps1,or Exchange 2010 Public Folder tool.

15. Move mailboxes to Exchange Server 2010 using Move Mailbox Wizard or Powershell.

16. Rehome the Offline Address Book (OAB) generation server to Exchange Server 2010.

17. Rehome Public Folder Hierarchy on new Exchange Server 2010 Admin Group.

18. Transfer all Public Folder Replicas to Exchange Server 2010 Public folder store(s).

19. Delete Public and Private Information Stores from Exchange 2003 server(s).

20. Delete Routing Group Connectors to Exchange Server 2003.

21. Delete Recipient Update Service agreements using ADSIEdit.

22. Uninstall all Exchange 2003 servers.

http://www.networkworld.com/community/node/47632

Hope this helps!
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AmitIT ArchitectCommented:
Just follow the Microsoft Exchange Deployment Tool

http://technet.microsoft.com/en-us/exdeploy2010/default.aspx
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indigo6Author Commented:
Thank you. So, what about removing the failed exchange 2010 server? Also, transitioning DNS and DHCP? Thanks again!
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AmitIT ArchitectCommented:
You can use adsiedit to remove the old Exchange server. However be careful while using this tool, as changes are irreversible.
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indigo6Author Commented:
OK, I think my exchange question is answered. It seems easier than I thought... I guess we will see. What about mxlogic and then transitioning DNS and DHCP? This server is also a DC, how can I safely decommission it?
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Tony GiangrecoCommented:
Have you received the info you were looking for? Ready to close and award points?
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indigo6Author Commented:
I guess I will close this question and start a separate one for the other topics. Thanks!
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