I have POSTFIX as my MAILSERVER running on CENTOS 5.4 32bit
Here is my setup/config:
Domain Name: tailinsubic-chatserver.com
eth0: ISP IP
eth1: Internal IP
in my main.cf i configured based on what i want to achieved
for example I want to establish External and Internal EMAIL using POSTFIX
has permission to send and recieve email outside in any domain name such as yahoo.hotmail,gmail and etc
but for firstname.lastname@example.org
permitted only local
but the problem on this is can receive incoming email on other domain like yahoo,gmail,hotmail and etc, But for sending in other domain is rejected.
only in same domain name
Please anyone can help to block all incoming.