Issue SMTP Reverse DNS Mismatch

[Benteo]

Hi,

Recently my all my domain hosted on the same server using 1 static IP has been facing this issue.
Can anyone help me with this issue?

Current setup
public IP address already have RDNS setup to server domain name
223.25.82.206 > RDNS > proteus-dt.com





error I am receiving

 

[Benteo]