I'm getting the dreaded Gmail ipv6 failure message when sending emails to gmail addresses:
Our system has detected that this message does 550-5.7.1 not meet IPv6 sending guidelines regarding PTR records and 550-5.7.1 authentication. Please review 550-5.7.1 https://support.google.com/mail/?p=ipv6_authentication_error for more 550 5.7.1 information.
I could of course disable ipv6, but I'd rather not do that.
So I'm looking for some help to add the PTR in webmin.
Do I need to first create master zone and then select "Reverse (Addresses to Names)"?
Or can I just go to the existing master zone, and then "Add Address Record"?
In that case, do I need to select "Update reverse?" and I presume I do NOT "replace existing"?
Any help appreciated.