
Microsoft
®
Windows Server
™
2003 White Paper
Windows NT 4.0 Server Upgrade Guide 129
• Upgrade to Exchange 2000, and then upgrade to Exchange Server 2003. This option is best for
organizations with a strong need to move away from Exchange 5.5.
• Upgrade directly to Exchange Server 2003. This option is recommended for other organizations.
Unless there is an immediate need to upgrade to Exchange 2000, it is probably best to wait for
Exchange Server 2003. The tools and documentation have improved, and this version provides
critical new features, such as spam defenses. Moreover, the extra risk associated with upgrading
to a new release can be reduced by carefully introducing Exchange Server 2003. Exchange
Server 2003 can be installed using a pilot program for testing purposes. The new server can be
placed into production in minimal capacity to see how it responds to a production environment.
Users can be slowly upgraded to the server as confidence in the server builds.
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