Errors When Sending Email To GMail Accounts
The error, I get for the reject looks like this…
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:
host gmail-smtp-in.l.google.com [2607:f8b0:4002:c03::1a]
SMTP error from remote mail server after pipelined end of data:
550-5.7.1 [2600:3c02::f03c:91ff:fe7a:19ad] Our system has detected that this
550-5.7.1 message does not meet IPv6 sending guidelines regarding PTR records
550-5.7.1 and authentication. Please review
550-5.7.1
550 5.7.1 . b4si539000ybh.245 - gsmtp
Does anyone know how I can resolve this?
–Dan
1 Reply
You will also want to make sure your SPF records include IPv6 if you are sending email over that. You can read more about SPF records here:
I hope this helps! If there's anything else we can do, please let us know.
Regards,
Stephen Crane…
Linode Customer Support