Instant Messaging cannot be configured during installation (Configure Now). After a Configure Later installation, the packages are installed and you are ready to perform the configuration tasks for Instant Messaging.
When you install the server, the multiplexor is also installed and enabled. If you want to support only a multiplexor on a host, you must disable the server installed on that host. For instructions, refer to the Sun Java System Instant Messaging 7.2 Administration Guide.
Instructions for using the Instant Messaging configure utility, InstantMessaging-base/configure, are contained in Chapter 1, Configuring Instant Messaging After Installation in the Sun Java System Instant Messaging 7.2 Administration Guide.
If needed configure Instant Messaging for use with the Sun Cluster software. Refer to Sun Cluster Data Services Configuration.