Mail delivery failed: returning message to sender

[Mail Delivery System]

This message was created automatically by mail delivery software.

A message that you sent could not be delivered to one or more of its
recipients. This is a permanent error. The following address(es) failed:

  zoozfbp@gmail.com
    (ultimately generated from shane@zoozsolutions.com)
    host gmail-smtp-in.l.google.com [74.125.20.27]
    SMTP error from remote mail server after end of data:
    550-5.7.25 [216.86.96.154] The IP address sending this message does not have a
    550-5.7.25 PTR record setup, or the corresponding forward DNS entry does not
    550-5.7.25 match the sending IP. As a policy, Gmail does not accept messages
    550-5.7.25 from IPs with missing PTR records. For more information, go to
    550-5.7.25  https://support.google.com/a?p=sender-guidelines-ip
    550-5.7.25 To learn more about Gmail requirements for bulk senders, visit
    550 5.7.25  https://support.google.com/a?p=sender-guidelines. 98e67ed59e1d1-37df39df57esi871270a91.15 - gsmtp