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exch 5.5 to 2003 upgrade


We have recently upgraded from NT 4/Exch 5.5 to Win 2k3/Exch 2k3.
The old Exch 5.5 is still online but all mailboxes have been moved to the Exch 2k3 server. All incoming email is direct to the 2k3 server. All public folders are replicated.

We would now like to decomission the old 5.5 server - what steps do we need to consider? I read that we need to pay special attention to this as was the first Exchange server.

1 Solution
Here's the steps from the Microsoft Technet site or you can go tot he website:

To remove Exchange 5.5 from an Exchange 2003 organization
1) From the Exchange Server 5.5 CD, run Setup.exe.
2) On the Microsoft Exchange Server Setup page, click Add/Remove.
3)Clear the checkbox for Microsoft Exchange Server and click Continue.
4) Use the Exchange 5.5 Administrator program to connect to another server within the same site. Make sure you are logged on using the Exchange service account or an account with equivalent permissions. To perform this step, you may need to reinstall the Administrator console from the Exchange 5.5 CD. Do not reinstall Exchange 5.5. Only install the Administrator console.
5) Select the server you want to delete. On the Edit menu, click Delete.
6) Verify that directory replication is complete and Active Directory Connector (ADC) cleanup has taken place. See "How to Verify Directory Replication and ADC Cleanup" in the Planning an Exchange Server 2003 Messaging System.

Check these
How to Remove the Last Exchange 5.5 Server from Your Exchange 2003 Organization

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