===== Exim Commands =====

  exim -bpc => no of emails currently in the mail queue
  exim -bpr => Print mail queue
  exim -M email-id => Force delivery of one message
  exim -qf => Force another queue run
  exim -qff => Force another queue run and attempt to flush the frozen message
  exim -Mvl messageID => View the log for the message
  exim -Mvb messageID => View the body of the message
  exim -Mvh messageID => View the header of the message
  exim -Mrm messageID => Remove message without sending any error message
  exim -Mg messageID => Giveup and fail message to bounce the message to the Sender
  exim -d -bt emailaddress => debug delivery for emailaddress