If you choose to use a location for logs other than the default, you need to modify the location of the default log file for the XMPP/HTTP gateway in httpbind_log4j.conf.
Open the httpbind_log4j.conf file.
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 of the log4.appender.appender_ID.file parameter to the location where log files are stored.