Hi folks, Guess I should say few words about myself fist as an introduction, if anyone cares. I'm systems administrator and I was mostly working with Windows servers before and I'm fairly new to Linux (almost 0 experience). I find this website a lifesaver and honestly not sure I'd be able to do anything on my own it if was't for it (looking forward to becoming a subscriber and support your project as of the next year). So, this is the article I'm referring to: http://www.howtoforge.com/virtual-u...rier-mysql-and-squirrelmail-centos-6.3-x86_64 So, I followed step-by-step instructions and managed to get my email server working! What confuses me is that I've altered /etc/postfix/main.cf file using postconf tool and when I list all settings by issuing #postconf, I can see them but they are not shown in main.cf file itself. Can someone please explain me where the catch is? Thanks a lot in advance! Cheers, B