For some strange reason, almost any time I use the rcgrpwise stop (if I need to stop the MTA/POA on the server), or if just stopping the POA, it says "failed" virtually every time.

Is there a particular timeout or something in the script that expects the POA to shutdown in X seconds?

The agent does shut down, but it will continue to show "failed" until you start it up again (as opposed to unused when it's not actually running).

GW 8.0.1 on OES2 SP1 Linux on NSS.