An easy step to get the list of application server attached to message server, if the list is empty, then there could be a potential problem in distributing the load.
http://<host>:<msserverhttpport>/msgserver/html/aslist
For a complete list of commands that can be executed using msgserver can be viewed using the below url.
http://<host>:<msserverhttpport>/msgserver/commands
Quick Tip : msserverhttpport can be retrieved from dev_ms file in the work directory.
Thanks
PrakashP