Migrating from Novell GroupWise to Exchange 2003 Server

During migration, many organizations have a period of interoperability, or "co-existence," between the server running Exchange 2003 Server and Novell GroupWise messaging systems. This is because only small organizations can migrate every user in a single night. Therefore, prior to most GroupWise migrations, organizations establish co-existence so that during the period of time it takes to migrate every user, Exchange Server and GroupWise users can continue communicating and collaborating with one another, regardless of which messaging system they are on.
 

GroupWise and Exchange co-existence

To achieve co-existence and directory synchronization between the two messaging systems, Exchange 2000 Server includes Microsoft Exchange Server Connector for Novell GroupWise. In addition, Exchange 2000 Server Service Pack 1 (SP1) introduced the Calendar Connector, so that GroupWise and Exchange Server users can schedule meetings with each other and share calendar information.
 

GroupWise distribution lists in the Exchange Server

During co-existence, Exchange Server users can see GroupWise distribution lists in the Exchange Server Global Address List (GAL). When an Exchange Server user sends a message to a GroupWise distribution list, only one copy of the message is sent over the GroupWise connector. By activating distribution list expansion, GroupWise is able to deliver the message to all distribution list members. The following procedure describes the steps you must take to enable distribution list expansion on the GroupWise system.