MSP Queue status...
                /var/spool/mqueue-client (97 requests)
-----Q-ID----- --Size-- -Priority- ---Q-Time--- --------Sender/Recipient--------
o4JIRYLu031485        8      30008 May 19 20:27 root
                 (Deferred: 450 4.7.1 Client host rejected: cannot find your hostname, [127.156.66.1])
                                                (---:xxx@gmail.com---)
                                                xxx@gmail.com
                 (Deferred: 450 4.7.1 Client host rejected: cannot find your hostname, [127.156.66.1])
o4JIR36E031437        5      30090 May 19 20:27 root
                 (Deferred: 450 4.7.1 Client host rejected: cannot find your hostname, [127.156.66.1])
                                                (---:xxx@gmail.com---)
                                                xxx@gmail.com
                 (Deferred: 450 4.7.1 Client host rejected: cannot find your hostname, [127.156.66.1])
o4JIOlTg030953        5     120090 May 19 20:24 root
                 (Deferred: 450 4.7.1 Client host rejected: cannot find your hostname, [127.156.66.1])
                                                (---:xxx@gmail.com---)
                                                xxx@gmail.com
                 (Deferred: 450 4.7.1 Client host rejected: cannot find your hostname, [127.156.66.1])
o4JINVGW030888       22     120091 May 19 20:23 root
                 (Deferred: 450 4.7.1 Client host rejected: cannot find your hostname, [127.156.66.1])
                                                (---:test---)
                                                test
                 (Deferred: 450 4.7.1 Client host rejected: cannot find your hostname, [127.156.66.1])