Linux/mail

http://www.cyberciti.biz/faq/exim-remove-all-messages-from-the-mail-queue/
http://www.exim.org/exim-html-current/doc/html/spec_html/ch50.html#SECTfinindret


sudo eximstats -nr -ne /var/log/exim4/mainlog

To print a list of the messages in the queue, enter:

# exim -bp
To remove a message from the queue, enter:

# exim -Mrm {message-id}
To remove all messages from the queue, enter:

# exim -bp | awk '/^ *[0-9]+[mhd]/{print "exim -Mrm " $3}' | bash

to clean queue

exim -qff