mail and dns server

[shrikant]

Hello friends ,

I am runnng pv-vm on kvm , which  has no license presently ,(version 9.0.4)

baiscally this setup is understand palo alto firewall

i have domain /fqdn  (want to run all a mx ns server to run locally )

i have setup a web ,mail and ftp and dns server ,web server and ftp server working but need some help/understanting on mail and dns server ,

do i need nat rule or proxy ?

i have configure nat rule but there is problem with over shadows rules which is confusing me

how to setup a u-turn nat when intenal dns server is setup ?

if 9.0.4 does not support submission then which mail it support and how to config it 

 any reseller pls send me pm/dm 

Thanks