I get this error when checking my DNS with an external tool:
Spam recognition software and RFC821 4.3 (also RFC2821 4.3.1) state that the hostname given in the SMTP greeting MUST have an A record pointing back to the same server
It essentially states this path:
mail.xxxx.com. -> mail.xxxx.com -> (IP of main server) -> xxxx.com
Now my postfix greeting appears as so:
$myhostname ESMTP $mail_name
Is the problem because $myhostname
is mail.xxxx.com and that is re-pointing to mail.xxx.com and THEN to my main server? I think I should change it to $mydomain
I would like to get some insight before I edit yet another DNS entry incorrectly.. Thanks