Ensure that you are familiar with the log4j syntax and general implementation described at the Apache Logging Services website.
This file is stored at the location you specified in httpbind.conf file as the value for the httpbind.log4j.config parameter. By default the file is stored in the following directory under the default Instant Messaging instance:
Set the value for the log4j.appender.appender-ID parameter to the location where you want to store the log file.
Save and close httpbind_log4j.conf.
Restart the web container.