Re: SPF, Hotmail, and Yahoo mail

[Dave Smith]

Here's some more information on the subject. I thought I would include 
the messages as they come from "mail" vs. Thunderbird. I'm hoping that 
someone here can spot the difference between the two that might be 
causing hotmail to drop the one sent from Thunderbird. These emails were 
sent to davidsmith at byu.net rather than to any hotmail address so I 
could look at both messages as they are received. I can only assume that 
they looked more or less like this when received by the byu.net MTA. 
Your thoughts would be greatly appreciated.

First, the email sent via the "mail" command:


Return-Path: <[EMAIL PROTECTED]>
X-Original-To: [EMAIL PROTECTED]
Delivered-To: [EMAIL PROTECTED]
Received: from stennis.byu.edu (stennis.byu.edu [128.187.16.58])
        by thesmithfam.org (Postfix) with ESMTP id E89F25C67C
        for <[EMAIL PROTECTED]>; Tue, 26 Jun 2007 22:56:35 -0400 (EDT)
Received: from thesmithfam.org (thesmithfam.org [66.160.141.49])
        by stennis.byu.edu (8.13.8/8.13.8) with ESMTP id l5R2uQRA004002
        for <[EMAIL PROTECTED]>; Tue, 26 Jun 2007 20:56:26 -0600
Received: by thesmithfam.org (Postfix, from userid 1000)
        id A26E65C67E; Tue, 26 Jun 2007 22:56:25 -0400 (EDT)
To: [EMAIL PROTECTED]
Subject: sent via mail command
Message-Id: <[EMAIL PROTECTED]>
Date: Tue, 26 Jun 2007 22:56:25 -0400 (EDT)
From: [EMAIL PROTECTED]
X-BYU-MailScanner: Found to be clean
X-BYU-MailScanner-SpamCheck: not spam, SpamAssassin (score=0, required 5,
        autolearn=disabled)
X-MailScanner-From: [EMAIL PROTECTED]

Testing with mail command




And second the mail sent from Thunderbird:


Return-Path: <[EMAIL PROTECTED]>
X-Original-To: [EMAIL PROTECTED]
Delivered-To: [EMAIL PROTECTED]
Received: from shelby.byu.edu (shelby.byu.edu [128.187.16.57])
        by thesmithfam.org (Postfix) with ESMTP id C9BAA5C67C
        for <[EMAIL PROTECTED]>; Tue, 26 Jun 2007 22:56:51 -0400 (EDT)
Received: from thesmithfam.org (thesmithfam.org [66.160.141.49])
        by shelby.byu.edu (8.13.8/8.13.8) with ESMTP id l5R2ugkL028303
        for <[EMAIL PROTECTED]>; Tue, 26 Jun 2007 20:56:42 -0600
Received: from [10.0.0.5] (djsmith.dsl.xmission.com [166.70.81.42])
        by thesmithfam.org (Postfix) with ESMTP id B1D7A5C67C
        for <[EMAIL PROTECTED]>; Tue, 26 Jun 2007 22:56:41 -0400 (EDT)
Message-ID: <[EMAIL PROTECTED]>
Date: Tue, 26 Jun 2007 20:59:50 -0600
From: Dave Smith <[EMAIL PROTECTED]>
User-Agent: Thunderbird 2.0.0.4 (Windows/20070604)
MIME-Version: 1.0
To: [EMAIL PROTECTED]
Subject: sent via thunderbird
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Content-Transfer-Encoding: 7bit
X-BYU-MailScanner: Found to be clean
X-BYU-MailScanner-SpamCheck: not spam, SpamAssassin (score=0, required 5,
        autolearn=disabled)
X-MailScanner-From: [EMAIL PROTECTED]

Testing via thunderbird


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