Backward Compatibility with ESM

Exchange System Manager is an MMC-based tool that provides administrators with a graphical user interface for managing the configuration of Exchange 2000 Server or Exchange Server 2003 organizations. Administrators of Exchange 2000 and earlier versions will be able to take advantage of Exchange 2003 ESM as soon as the first Exchange 2003 server is added to their organization. The caveat is that the administrators must run the ForestPrep procedure before using the Exchange 2003 ESM or when using the tool in a non-Microsoft supported environment.

Using ESM 2003 in mixed mode environments is supported; however, certain restrictions and limitations exist. As you know, Exchange System Manager 2003 can manage Exchange 2003, Exchange 2000, and Exchange 5.5 servers. Exchange System Manager 2003 cannot manage any components that existed in Exchange 2000 but that were removed from Exchange 2003, such as Key Management Service, Instant Messaging and Chat, or legacy connectors. Because these components are not supported, they will not appear in the ESM console. New Exchange features such as Queue Viewer, Move Mailbox, Mailbox Recovery Center, and Internet Mail Wizard can all be used in Exchange 2000 and Exchange 2003 environments.

There are a few things that administrators should remember:

  • Do not use ESM in Exchange 2000 to manage or edit any Exchange 2003 server components. The Exchange 2000 ESM does not understand new objects in Exchange 2003, such as Outlook Mobile Access, and will cause damage and/or corruptions of the objects.

  • Exchange ESM 2000 is not version aware. If you must manage Exchange 2000 and 2003 systems, be sure to install Exchange 2000 SP3 and the latest version of the SP3 Rollup patch. The combination of patches makes Exchange 2000 ESM version aware, preventing edits of objects requiring a later version of Exchange System Manager. A dialog error box will pop up on screen when this condition is met.

  • Exchange 2000 ESM cannot be installed on an Exchange 2003 system, and vice versa.

  • Exchange 2000 ESM and Exchange 2003 ESM cannot be installed on the same computer. If mixed mode operation is required in the organization, individual workstations will be required for each version of ESM.


A simple workaround exists for managing a mixed-mode environment: use remote management access methods such as a Terminal Server session or Remote Desktop Services. This will keep the number of management workstations to a minimum.

Sams Teach Yourself Exchange Server 2003 in 10 Minutes
Sams Teach Yourself Exchange Server 2003 in 10 Minutes
ISBN: 0672327244
EAN: 2147483647
Year: 2005
Pages: 130
Authors: James Walker © 2008-2017.
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