def recv_server_dialog_line(self, line):
        """All 'dialog' lines (which are mail commands send by the mail client
        to the MTA) are processed here.

        Dialog example:
            MAIL FROM: foo@bar.tld
        """
        mline = "{0}{1}".format(line, CRLF)
        print(">>", line)
        self.remote.send(mline.encode())
All 'dialog' lines (which are mail commands send by the mail client
        to the MTA) are processed here.

        Dialog example:
            MAIL FROM: foo@bar.tld
        
recipes/Python/577260_Multi_threaded_SMTP_proxy/recipe-577260.py