class Mail::Sendmail

def old_deliver(envelope)
  smtp_from = envelope.from
  smtp_to = destinations_for(envelope)
  from = "-f #{shellquote(smtp_from)}" if smtp_from
  destination = smtp_to.map { |to| shellquote(to) }.join(' ')
  arguments = "#{settings[:arguments]} #{from} --"
  command = "#{settings[:location]} #{arguments} #{destination}"
  popen command do |io|
    io.puts ::Mail::Utilities.binary_unsafe_to_lf(envelope.message)
    io.flush
  end
end