Upgrading to Exchange 2003 before upgrading to a Windows 2003 domain
An administrator wants to migrate to Exchange 2003 before performing the recommended upgrade a Windows 2003 Active Directory. SearchExchange.com expert Peter terSteeg explains how he can accomplish this – with one caveat.
I know that it is recommended to upgrade Active Directory to Windows 2003 first, and then do the Exchange 2003 migration. However, since we are running Outlook Web Access 2003, I had already run domainprep and forestprep from the Exchange 2003 CD.
Can I simply set up Exchange 2003 on a Windows 2003 member server alongside the existing Exchange 2000 box, migrate all mailboxes to the new box, remove Exchange 2000 from the domain controller, and then upgrade the domain to Windows 2003?
Will I encounter any difficulties using this method?
Also, before decommissioning the old server you need to consider public folders, global address lists, etc.
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