SPF/TXT records

Jeff Lightner jlightner at water.com
Wed Jun 17 14:46:44 UTC 2009

When one sets SPF/TXT record is it for the relay server/IP that sent the
email to the internet or the originating one?
For example we have a server (atuprd01.water.com) that can not be
reached via the internet.  Email originating there is relayed through
our MS-Exchange server (if sent with domain water.com) or a Linux
Sendmail server (if sent with domain waterinvoice.com).  All email sent
via exchange goes out an IP separate from incoming mail (MX) IP.   All
email sent via Sendmail has a separate IP from incoming mail (MX) IP.  
Should the SPF specify the outbound IP (e.g. for
atlsnml2.waterinvoice.com) for the Sendmail server email or the IP/name
for atuprd01.water.com? 
Source/Headers for a test message shown below in case it helps:
X-Eon-Dm: dm0208
Return-Path: <jllightner at waterinvoice.com>
Received: from atlsnml2.waterinvoice.com ( [])
        by dm0208.mta.everyone.net (EON-INBOUND) with ESMTP id
        for <jclightner at copper.net>; Wed, 17 Jun 2009 07:24:11 -0700
Received: from atuprd01.water.com (atuprd01.water.com [])
        by atlsnml2.waterinvoice.com (8.13.8/8.13.8) with ESMTP id
        for <jclightner at copper.net>; Wed, 17 Jun 2009 10:30:16 -0400
Received: (from jlightne at localhost)
        by atuprd01.water.com (8.9.3 (PHNE_35484)/8.9.3) id KAA21720
        for jclightner at copper.net; Wed, 17 Jun 2009 10:30:13 -0400 (EDT)
Date: Wed, 17 Jun 2009 10:30:13 -0400 (EDT)
From: jllightner at waterinvoice.com
Message-Id: <200906171430.KAA21720 at atuprd01.water.com>
X-Authentication-Warning: atuprd01.water.com: jlightne set sender to
jllightner at waterinvoice.com using -r
To: jclightner at copper.net
Subject: Test from atuprd01
Mime-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Transfer-Encoding: 7bit
Please consider our environment before printing this e-mail or attachments.
CONFIDENTIALITY NOTICE: This e-mail may contain privileged or confidential information and is for the sole use of the intended recipient(s). If you are not the intended recipient, any disclosure, copying, distribution, or use of the contents of this information is prohibited and may be unlawful. If you have received this electronic transmission in error, please reply immediately to the sender that you have received the message in error, and delete it. Thank you.
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