Array
(
    [0] => Array
        (
            [eventID] => 614240
            [ip] => 167.89.23.147
            [response] => 451 4.3.5 Server configuration problem 
            [sg_event_id] => qNjRaGceSzq9Pc9LbR5EFg
            [sg_message_id] => rPODRLQETUqpL-cWvPbHgA.filter1513p1mdw1-11860-5B0A25D7-D.0
            [tls] => 1
            [event] => deferred
            [cert_err] => 1
            [email] => jtuckett6v@histats.com
            [attempt] => 1
            [timestamp] => 1527391737
            [smtp-id] => 
        )

    [1] => Array
        (
            [eventID] => 614293
            [ip] => 167.89.23.147
            [response] => Unable to resolve MX host mail2.sitemeter.com: nxdomain
            [sg_event_id] => _s4g_TMUS-OnPxXng3iazQ
            [sg_message_id] => 0nUjCRqTTGav41xnDqflkw.filter1778p1mdw1-10145-5B0A25EE-B.0
            [tls] => 0
            [event] => deferred
            [email] => rgoodrich8c@sitemeter.com
            [attempt] => 0
            [timestamp] => 1527391756
            [smtp-id] => <0nUjCRqTTGav41xnDqflkw@ismtpd0024p1las1.sendgrid.net>
        )

)