Helpful Exim Commands:
/usr/sbin/exim -M email-id => Force delivery of one message
/usr/sbin/exim -qf => Force another queue run
/usr/sbin/exim -qff => Force another queue run and attempt to flush the frozen message
/usr/sbin/exim -Mvl messageID => View the log for the message
/usr/sbin/exim -Mvb messageID => View the body of the message
/usr/sbin/exim -Mvh messageID => View the header of the message
/usr/sbin/exim -Mrm messageID => Remove message without sending any error message
/usr/sbin/exim -Mg messageID => Giveup and fail message to bounce the message to the Sender
/usr/sbin/exim -bpr | grep “<” | wc -l =>Number of emails in the que
/usr/sbin/exim -bpr | grep frozen | wc -l => How many Frozen mails on the queue
/usr/sbin/exim -bpr | grep frozen | awk {‘print $3’} | xargs exim -Mrm => Deleteing Frozen Messages
To flush the exim queue:
1. login to your server via ssh as root.
2. Type: exim -qff
Reference from: serversitters