I notice from time to time by checking my mail queue that messages get stuck there because users send to an invalid or non existing domain. My Postfix server attempts to hold the message in queue for later delivery assuming the remote server could be experiencing issues right his moment. My question is can I simply run a command to force a delivery failure rather than issuing the 'postsuper -d queue_id'? If I run the 'postsuper' command, the message is simply deleted from the queue and vanishes never to be heard from again. I want to force Postfix to return the message with a delivery failure to the sender. Is this possible?
I searched man postsuper & Google and could not find anything I was looking for. Thanks!
