Sun Java System Instant Messaging 7.2 Administration Guide

Searching the Directory Using Wildcards

If your directory is indexed to allow the use of wildcards, and you want to be able to use wildcards while searching for contact names, you need to configure the Instant Messaging server to allow wildcard searches. However, allowing wildcard searches can impact performance unless User IDs are indexed for substring search. See Modifying How Client Users Search for Contacts for instructions on allowing wildcard searches in Instant Messaging.