I have a KS server, a VPS Starter and an .OVH domain.
Other domains are registered elsewhere.
In the domain I created two A records that point to the two servers.
On the KS server there is Debian with a web server, a mail server and BIND to manage a Master Nameserver with my other domains.
The .OVH domain is still managed in the OVHCloud panel.
On the VPS there is the DNS Slave.
When I send mail (relating to one of my domains) to mailboxes managed by Google they are all rejected with an error message because the PTR is incorrect.
Spam tests with mail-tester.com and mxtoolbox.com also give me a PTR for the IPV4 and IPV6 address of my KS server.
How can I create a PTR that identifies my domain and not my server?
This is the GMail error:
`Gmail has detected that this message does not 550-5.7.1 meet IPv6 sending guidelines regarding PTR records and authentication 550-5.7.1 .`
Thanks in advance.