def main
  if agent.message.multipart?
    size = 0
    agent.message.body.each do |part|
      if part.body
        size += part.body.length
      end
    end
  else
    if agent.message.body
      size = agent.message.body.length
    else
      size = 0
    end
  end

  agent.log(2, "Message from #{agent.header['From']} (#{size} bytes)")

  begin
    if size < 102400
      agent.filter("crm -u /var/mail/crm/ mailreaver.crm")

      probability = agent.header['X-CRM114-Status'].sub(/[^0-9-]*(-?\d*\.?\d*)[^0-9]*/, '\1').to_f
      agent.log(2, "Spam probability: #{probability}")

      if agent.header['X-CRM114-Status'] =~ /SPAM/
        agent.save(".Spam/")
      end
    end
  rescue RFilter::DeliveryAgent::DeliveryCommandFailure => exception
    agent.log(2, "Filter failed")
    agent.save("./")
  end

  agent.save("./")
end