"Exchange Load Generator is a simulation tool to measure the impact of MAPI, OWA, IMAP, POP and SMTP clients on Exchange servers.

Important! LoadGen should be used only in laboratories that have no connection to the production environment. This tool should not be used in any way in a production environment or an environment that is mission critical or contains important information of any kind anywhere in the network.

Note: The XML configuration file schema in this release has changed from previous versions. You will need to create a new XML configuration file with the Load Generator UI. The existing topology will be marked as un-editable if there are users created by previous versions of Microsoft Exchange Load Generator. Add your remote client machines again, and then save the updated configuration XML.

Note: If you use the recipient management features of this release to create users or other recipient objects and you have one or more Exchange Server 2007 servers in your test topology, you must run the Load Generator application with user credentials that have permission to manage Exchange recipients. The directory access account specified in the application configuration will not be used for this purpose."