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I found the server migration part of my answer from:<br />
<a href="https://www.experts-exchange.com/questions/20734866/NT4-0-server-to-Windows-2003.html" rel="ugc">https://www.experts-exchange.com/questions/20734866/NT4-0-server-to-Windows-2003.html</a><br />
<br />
and MS Exchange Migration from:<br />
<a href="http://www.computerperformance.co.uk/exchange2003/exchange_2003_migration_strategy.htm#Phase%20one%20-%20Move%20user%20accounts%20from%20NT%204.0%20and%20DIR.edb%20to%20Active%20Directory" rel="ugc">http://www.computerperformance.co.uk/exchange2003/exchange_2003_migration_strategy.htm#Phase%20one%20-%20Move%20user%20accounts%20from%20NT%204.0%20and%20DIR.edb%20to%20Active%20Directory</a><br />
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I found the server migration part of my answer from:
https://www.experts-exchange.com/questions/20734866/NT4-0-server-to-Windows-2003.html [https://www.experts-exchange.com/questions/20734866/NT4-0-server-to-Windows-2003.html]

and MS Exchange Migration from:
http://www.computerperformance.co.uk/exchange2003/exchange_2003_migration_strategy.htm#Phase%20one%20-%20Move%20user%20accounts%20from%20NT%204.0%20and%20DIR.edb%20to%20Active%20Directory [http://www.computerperformance.co.uk/exchange2003/exchange_2003_migration_strategy.htm#Phase%20one%20-%20Move%20user%20accounts%20from%20NT%204.0%20and%20DIR.edb%20to%20Active%20Directory]



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We have a NT server, PDC, installed MS Exchange to support our internal email. Lately we bought a new server installed with Windows server 2003 and MS Exchange. We are intending to replace the old NT server with the new windows server 2003. What is the best way/path to move users and the mail boxes into the new machine with windows server 2003.
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We have a NT server, PDC, installed MS Exchange to support our internal email. Lately we bought a new server installed with Windows server 2003 and MS Exchange. We are intending to replace the old NT server with the new windows server 2003. What is the best way/path to move users and the mail boxes into the new machine with windows server 2003.

Migration from NT

Windows Server 2003 was based on Windows XP and was released in four editions: Web, Standard, Enterprise and Datacenter. It also had derivative versions for clusters, storage and Microsoft’s Small Business Server. Important upgrades included integrating Internet Information Services (IIS), improvements to Active Directory (AD) and Group Policy (GP), and the migration to Automated System Recovery (ASR).