When i try send email from my firstname.lastname@example.org to a gmail account, i obtain this message:
host gmail-smtp-in.l.google.com [2a00:1450:400c:c07::1a]
SMTP error from remote mail server after end of data:
550-5.7.1 [2001:19f0:7402:663:5400:1ff:fe39:cb19] Our system has detected that
550-5.7.1 this message does not meet IPv6 sending guidelines regarding PTR
550-5.7.1 records and authentication. Please review
for more information
550 5.7.1 . r126si2702708wmd.76 - gsmtp
Can someone help me set up the reverse dns?
In the IPv6 configuration section, what do I have to put in the IP and Reverse DNS fields?