Exim queue cheat sheet
These are just some Exim command line arguments that I use all the time but can never remember the finer details of.
Cancel a message in the queue, informing the sender via bounce message, and also silently delete a message from the queue:
exim -Mg <message id> exim -Mrm <message id>
Freeze and thaw a message
exim -Mf <message id> exim -Mt <message id>
Add recipients to a message, or mark specified or all recipients of a message as delivered:
exim -Mar <message id> <recipient ..> exim -Mmd <message id> <recipient ..> exim -Mmad <message id>