What I didn't find out is how to reschedule a message (so that it is getting processed now).
The feature doesn't exist.
Thx for your reply. Will such features be implemented or are there some things planed for the future ?
JBossMQ is not being further developed (at least by Redhat employees).
Only bug fixes are being done.
Either, ask in the JBoss Messaging forum (the replacement for JBossMQ)
or provide a patch for the feature with a test showing it works and I'll apply it
(as long at it doesn't break other things :-)