Setup Email gateway

I’m trying to setup email gateway but unable to do it.
There are three different procedures from RT Wiki site.
I tried all three but couldn’t get any of them working.

I edited master.cf to include two lines
#rt rt-pipe unix n- n - pipe
rt-comment -pipe unix n - --pipe

Also i created a new file in /etc/postfix/transport
and included lines:

Can anyone help me with a link through which i can follow a right
tutorial to fix my email gateway real quick.

This is what i got while trying to reload postfix.

postfix/postfix-script: fatal: the Postfix mail system is not running

Thanks
Ashrafuddin Mohammed
System Administrator
Midcontinent Financial Center, Inc.
toll free: 866-590-4562 x345
local 573-443-6002 x345
fax 888-249-3529
email ash@americanmutualloans.com

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I’m trying to setup email gateway but unable to do it.
There are three different procedures from RT Wiki site.
I tried all three but couldn’t get any of them working.

Have you tried the README? It shows you how to edit your aliases file

-kevin