Help with SPF record Please

Hosting
1

I am trying to help a client of my set up an SPF record for his domain. He has the need to authenticate mail from three locations

  1. his domain whistlerreservations.com which is set up with google apps mail

  2. Via a third party booking engine that sends mail from the domain rezserve.com

  3. Via campaign monitor (cmail1.com) which is an email distribution system.

I am thinking this is the SFP record I need to implement

v=spf1 a mx include:rezserve.com include:cmail1.com include:_spf.google.com ~all

but am a bit concerned to do so as this is not exactly my area and don’t want to create more problems then I am trying to fix

Can somebody please verify this is correct?

I hacked this together from various sources

  1. google apps help - google.com/support/a/bin/answer.py?answer=178723]SPF records - Google Apps Help

which says to set the following v=spf1 include:_spf.google.com ~all

  1. Campaingmonitor help -help.campaignmonitor.com/topic.aspx?t=88

Which says to set - v=spf1 mx include:cmail1.com ~all

Below is the mail header from one of the messages sent from resserve.com

Delivered-To: jac@whistlerwebandprint.com
Received: by 10.231.30.196 with SMTP id v4cs105047ibc;
Mon, 28 Feb 2011 13:54:38 -0800 (PST)
Received: by 10.227.156.207 with SMTP id y15mr5389341wbw.38.1298930077969;
Mon, 28 Feb 2011 13:54:37 -0800 (PST)
Return-Path: <reservations@whistlerreservations.com>
Received: from rezserve.com ([204.14.93.102])
by mx.google.com with ESMTPS id p44si7256090wej.197.2011.02.28.13.54.36
(version=TLSv1/SSLv3 cipher=OTHER);
Mon, 28 Feb 2011 13:54:36 -0800 (PST)
Received-SPF: neutral (google.com: 204.14.93.102 is neither permitted nor denied by best guess record for domain of reservations@whistlerreservations.com) client-ip=204.14.93.102;
Authentication-Results: mx.google.com; spf=neutral (google.com: 204.14.93.102 is neither permitted nor denied by best guess record for domain of reservations@whistlerreservations.com) smtp.mail=reservations@whistlerreservations.com
Received: from rezserve.com (localhost.localdomain [127.0.0.1])
by rezserve.com (8.13.1/8.13.1) with ESMTP id p1SLsT8X032018
for <jac@whistlerwebandprint.com>; Mon, 28 Feb 2011 16:54:29 -0500
Received: (from apache@localhost)
by rezserve.com (8.13.1/8.13.1/Submit) id p1SLsTll032016;
Mon, 28 Feb 2011 16:54:29 -0500
Date: Mon, 28 Feb 2011 16:54:29 -0500