I have set up a Postfix Dovecot email server on my Vultr. And I'm getting following message from Google:
gmail-smtp-in.l.google.com said: 550-5.7.1
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 550-5.7.1
https://support.google.com/mail/?p=IPv6AuthError for more information 550
5.7.1 . e2-20020a05622a110200b0041203888045si7330616qty.45 - gsmtp (in
reply to end of DATA command)
So I need a reverse DNS record add to my Vultr. I googled how to do that, and it shows me that I might need a
host and value for reverse DNS. However, the Vultr page shown as this
So the Reverse DNS is editable, but only have one text box. How could I add both name and value in one text box?
Do I need to create a ticket to make a PTR record? Or I could actually make a Reverse DNS in this single textbox? If I could, what should I type in?
This is my DNS server configuration, I'm not sure if it is correct for reverse DNS.
Type Name Data TTL
TXT @ mail.xxxx.com 1 hour