On 03/11/2013 04:39 AM, Alexander Dalloz wrote:
Am 11.03.2013 03:54, schrieb Austin Einter:
Dear All I am planning to setup mail server for my domain.
Which one is preferred postfix or sendmail.
Choose the one you understand best.
I came across a link * http://ostechnix.wordpress.com/2013/02/08/setup-mail-server-using-postfixdov...
- for postfix mail setup.
Don't follow tutorials. Period. They don't really teach you how to do things. Look at the one you refered to: it explains nothing. It keeps you dumb and in case something goes wrong - and be assured, things will go mad running a mailserver - you have not the slightest clue how to debug or how to fix it.
So please, read the original documentation of the MTA of choice.
And don't expect to be able to configure your first MTA properly right from the beginning. So don't start with a public one but train in a closed area like a protected LAN.
It says, Prerequisites:
- The mail server should contain a valid MX record in the DNS server. Navigate to this link how to setup DNSserverhttp://ostechnix.wordpress.com/2013/01/25/setup-dns-server-step-by-step-in-centos-6-3-rhel-6-3-scientific-linux-6-3-3/ . - Firewall and SELinux should be disabled.
Any tutorial or page that instructs you to turn off the firewall and/or SELinux is going plainly wrong right from the start. I have no words about that nonsense.
So far, I have not found any published selinux help for dovecot using a mysql store for domain/userid accounts. This is a common setup, in fact postfixadmin is available to simplify this approach. But maybe my search fu continues to be weak and I have missed the selinux help for this. I HAVE received general help that is helping me build the module.pp files to address the selinux requirements. So I am fixing this, and when I publish MY learning experience, I will definitely include this portion. It frightens me that there is so much out there on HOW to set this up; you read a bunch of them to get the information to help plow through the documentation, but no help on selinux.
I have disabled iptables as my m/c is behind the firewall.
It says I need to disable firewall. Is it really required. Kindly let me know.
It is required to configure the iptables based firewall, but it is not required to completely shut it off.
In another email I have supplied all the ports he is likely to need opened.