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:
stopm...@gmail.com
host
gmail-smtp-in.l.google.com [142.250.27.27]
SMTP error from remote mail server after end of data:
550-5.7.25 [87.120.36.75] 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 point to the sending IP. As a policy, Gmail does not accept messages
550-5.7.25 from IPs with missing PTR records. Please visit
550-5.7.25
https://support.google.com/mail/answer/81126#ip-practices for more
550 5.7.25 information. e15-20020a1709061e8f00b00783d969f318si1237475ejj.253 - gsmtp