When installing or troubleshooting the POA, a logging level of Verbose can be useful. However, when the POA is running smoothly, you should set the logging level down to Normal to conserve POA resources for actual message delivery.
In ConsoleOne, browse to and right-click the POA object > click Properties.
Click GroupWise > Log Settings to display the Log Settings page.

Set the desired settings for logging.
Corresponding Startup Switches
You could also use the /log, /loglevel, /logdays, /logmax, and /logdiskoff switches in the POA startup file to configure logging.