I've already been down this road. Forget about playing with queue file names, permissions and all the other "back door" methods of accessing the queues, and use the utilities supplied.
Calling an external app to make things happen isn't quite as elegant as being able to drop files where you want them, however you also won't get angry phone calls about missing or "stuck" mail. If you consider the potential visibility, nobody except you will know that you're holding, releasing and re-injecting mail using external applications, however if you guess wrong mess up or something changes in postfix and breaks your stuff, *everybody* will know. Terry
