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This is my mail log file on my local RHEL5 system:-

From  Mon Jun  4 02:04:23 2012
X-Original-To: c
Received: by (Postfix, from userid 0)
id 9C6C356014; Mon,  4 Jun 2012 02:04:23 -0700 (PDT)

Subject: d
Message-Id: <>
Date: Mon,  4 Jun 2012 02:04:23 -0700 (PDT)
From: (achal)

I want to change Return-Path: to, I have tried header_ checks in postfix but i am not able to get the proper format.Can anybody tell me how to do this.

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up vote 0 down vote accepted

Check My own hostname, My own domain name & My own network addresses

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