Hi,

I have a postfix-2.10.5 server on fedora, and have several users that
forward their mail through to gmail. This is apparently enough to
break SPF and make gmail think I'm the originator of the email,
instead of the actual sender. Consequently, gmail considers it spam
and moves it to a spam folder.

Is there anything I can do, including somehow rewriting the email, to
get gmail (and others, for that matter) to accept these forwarded
emails without considering them spam?

Can they be rewritten using our SPF information, somehow?

I've included the header (modified user/IP addresses) in case it's helpful.

Delivered-To: origu...@gmail.com
Received: by 10.13.203.214 with SMTP id n205csp587551ywd;
        Sat, 25 Jul 2015 06:39:29 -0700 (PDT)
X-Received: by 10.55.25.131 with SMTP id 3mr28553330qkz.85.1437831569919;
        Sat, 25 Jul 2015 06:39:29 -0700 (PDT)
Return-Path: <earl.ma...@example1.com>
Received: from orion.example.com (orion.example.com. [68.111.111.42])
        by mx.google.com with ESMTPS id f79si14214872qki.10.2015.07.25.06.39.29
        for <exam...@gmail.com>
        (version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128);
        Sat, 25 Jul 2015 06:39:29 -0700 (PDT)
Received-SPF: neutral (google.com: 68.111.111.42 is neither permitted
nor denied by best guess record for domain of earl.ma...@example1.com)
client-ip=68.111.111.42;
Authentication-Results: mx.google.com;
       spf=neutral (google.com: 68.111.111.42 is neither permitted nor
denied by best guess record for domain of earl.ma...@example1.com)
smtp.mail=earl.ma...@example.com
Received: by orion.example.com (Postfix)
    id 4DC19A60368; Sat, 25 Jul 2015 09:39:29 -0400 (EDT)
Delivered-To: supp...@example.com
Received: from localhost (localhost [127.0.0.1])
    by juggernaut.example.com (Postfix) with ESMTP id CB94A181A9E
    for <supp...@example.com>; Sat, 25 Jul 2015 09:39:28 -0400 (EDT)
X-ActualMessageSizeBytes: 41474
X-ActualMessageSize:
X-Virus-Scanned: amavisd-new at example.com
X-Spam-Flag: NO
X-Spam-Score: -0.399
X-Spam-Level:
X-Spam-Status: No, score=-0.399 tagged_above=-200 required=5
    tests=[BAYES_00=-1.9, HTML_MESSAGE=0.001, LOC_CDIS_INLINE=0.1,
    LOC_IMGSPAM=0.1, RDNS_NONE=0.8, RELAYCOUNTRY_LOW=0.5]
    autolearn=no autolearn_force=no
Received: from relay.example1.com (relay2.example1.com [206.111.111.44])
    (using TLSv1 with cipher AES128-SHA (128/128 bits))
    (No client certificate requested)
    by juggernaut.example.com (Postfix) with ESMTPS id 71AC0180271
    for <supp...@example.com>; Sat, 25 Jul 2015 09:39:21 -0400 (EDT)
Received: from HQXCHA402.example1.com ([fe80::e4d8:XXXX:53e5:e9d2]) by
 HQXCHA401.example.com ([fe80::7199:XXXX:b314:a497%25]) with mapi id
 14.03.0224.002; Sat, 25 Jul 2015 06:39:19 -0700
From: Operations <o...@example1.com>
To: Support <supp...@example.com>
CC: Operations <o...@example1.com>
Subject: User List Request
Thread-Index: AdDG30D3+GNpY2bR+6PMmxGK/70Bw==
Sender: "Marsh, Earl" <earl.ma...@example1.com>
Date: Sat, 25 Jul 2015 13:39:19 +0000
Message-ID: <68fcc58030b4164e802bb27ff159fe0535e6b...@hqxcha402.example.com>
Accept-Language: en-US
Content-Language: en-US
X-MS-Has-Attach: yes
X-MS-TNEF-Correlator:
x-originating-ip: [172.28.53.207]
Content-Type: multipart/related;
    boundary="_010_68FCC58030B4164E802BB27FF159FE0535E6B731HQXCHA402bes_";
    type="multipart/alternative"
MIME-Version: 1.0

Any ideas greatly appreciated.
Thanks,
Alex

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