3 ms·
It's a requirement to send mail to some servers. "Set up valid reverse DNS records of your IP addresses that point to your domain." https://support.google.com
by cube00 6y ago
It's a requirement to send mail to some servers.
"Set up valid reverse DNS records of your IP addresses that point to your domain."
https://support.google.com/mail/answer/81126 https://support.google.com/mail/answer/81126