This is the mail system at host gw-mail-vps-160.metrabyte.net.
I'm sorry to have to inform you that your message could not be delivered to one or more recipients. It's attached below.
For further assistance, please send mail to postmaster.
If you do so, please include this problem report. You can delete your own text from the attached returned message.
The mail system
: host gmail-smtp-in.l.google.com[74.125.68.27] said:
550-5.7.1 [119.59.111.160] The IP address sending this message does not
have a 550-5.7.1 PTR record setup. As a policy, Gmail does not accept
messages from 550-5.7.1 IPs with missing PTR records. Please visit
550-5.7.1 https://support.google.com/mail/answer/81126#authentication for
more 550 5.7.1 information. e4si13563088obn.90 - gsmtp (in reply to end of
DATA command)