The Perfect Server - CentOS 6.4 x86_64 (nginx, Dovecot, ISPConfig 3) vs Debian Wheezy (nginx, BIND,

Hello!
I'm following two tutorials:

• The Perfect Server - CentOS 6.4 x86_64 (nginx, Dovecot, ISPConfig 3)
• The Perfect Server - Debian Wheezy (nginx, BIND, Dovecot, ISPConfig 3)

and they do not match in Postfix configuration part.
The Perfect Server - CentOS 6.4 x86_64 (nginx, Dovecot, ISPConfig 3) - Page 4 says:
https://www.howtoforge.com/perfect-server-centos-6.4-x86_64-nginx-dovecot-ispconfig-3-p4

So, only install and start. There is nothing on Postfix configuration.
The Perfect Server - CentOS 6.4 x86_64 (nginx, Dovecot, ISPConfig 3) - Page 4 says:
https://www.howtoforge.com/perfect-server-debian-wheezy-nginx-bind-dovecot-ispconfig-3-p3

So I'm confused.
Should I leave master.cf file on CentOS as it is or should I make the changes as suggested by the Debian tutorial?

 

Thank you

 

@till
Do I change master.cf or master.cf~ as well on CentOS?

 

Just update master.cf - master.cf~ is a backup