code: def process_message(self, peer, mailfrom, rcpttos, data, **kwargs):
          
          inheaders = 1
          lines = data.split('\n')
          logger.info('---------- MESSAGE FOLLOWS ----------')
          for line in lines:
              # headers first
              if inheaders and not line:
                  logger.info('X-Peer: %s' % peer[0])
                  inheaders = 0
              logger.info(line)
          logger.info('------------ END MESSAGE ------------')
docs: Output will be sent to the module logger at INFO level.