best useful exim commands
print summery of mail queue
exim -bp | exiqsumm
find all e-mails in the queue to exact e-mail
exiqgrep -r [luser]@domain
remove all e-mails from the queue to exact e-mail
exiqgrep -i -r [luser]@domain | xargs exim -Mrm
find all e-mails in the queue from exact e-mail
exiqgrep -f [luser]@domain
remove all e-mails in the queue from exact e-mail
exiqgrep -i -f [luser]@domain | xargs exim -Mrm