Reverse DNS - how to correctly configure for SMTP delivery
I ran a DNS check and ended up with the following error:
FAIL: Found reverse DNS entries which don't resolves IP-IP-IP-IP.HOST.DOMAIN.TLD → ??? All IP's reverse DNS entries should resolve back to IP address (MX record's name -> IP -> IP Reverse -> IP). Many mail servers are configured to reject e-mails from IPs with inconsistent reverse DNS configuration.
How do I properly configure and it so it goes to an IP?