I have been trying to deduce if it is possible to force a message waiting in the mail queue with temporary errors (domain name resolution failures) to bounce right now instead of waiting for the timeout.
The mail queue has messages addressed to unreachable addresses. I know that if I do nothing that eventually they will expire normally and a delivery status notification will be produced back to the sender. But having investigated them in detail I know that those addresses can never be delivered. I would like them to bounce back to the sender now so that they are notified now of their undeliverability instead of waiting. The sender is a local user. Is it possible to do this such as through using the postsuper command? I know I can delete the messages. But can I cause them to bounce without waiting? I don't want to delete them but want the sender to get a normal bounce back so that they are notified normally that the addresses are undeliverable. I have been reading the man page documentation for postsuper in as much detail as I can muster and if it is in there I do not see it. But it seems like this is something that is very likely to be possible. If so I would love to be educated on how to do it. Thanks, Bob