Hi Alex, A mail server that I operate had similar issues several years ago. Our solution was to stop users from forwarding, and make them use gmail's POP3 support for fetching mail. Whenever a new user gets their account set up, we ask them if they want to use our webmail interface or gmail, and help them get set up with either one.
This solution may not be ideal for your situation, depending on just how many users you have (and would therefore need to help set it up), but it's worth mentioning, in case it would work for you. - Cody On Jul 25, 2015 6:05 PM, "Alex" <mysqlstud...@gmail.com> wrote: > 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 >
