I use mxtoolbox to test - > smtp:Test mail server SMTP (port 25)
Then I become warning: Warning - Reverse DNS does not match SMTP Banner
How to fix that ??
I read on forum, that I have to change main.cf (smtpd_banner).
Have someone did that ??
In my main.cf I found:
smtpd_banner=$myhostname ESMTP $mail_name
What I have to change?