/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 via ssh as root

2. look in your queue, type mailq

3. type: exim -qff