SPF softfail in received mail

R

rutsagig

New Member
Sep 5, 2020
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I have a mail VPS server and I'm installed PMG on another VPS to test it. I have a config like this:

PMG server: pmg.server.com (IP 5.5.5.5)
Default relay: mail.server.com (IP: 1.1.1.1)
Realydomain: mydomain.com
Trusted networks: Mail server IP (I think this is not mandatory)
I didn't change anything else yet.

I point mydomain.com MX record to PMG server and it's working, but all mail I receive fails SPF, since origin IP is always PMG server IP. E.g.
If I send mail from me@gmail.com to me@mydomain.com I receive it with this headers:

Code: 
Received-SPF: softfail (gmail.com ... _spf.google.com: Sender is not authorized by default to use 'me@gmail.com' in 'mfrom' identity, however domain is not currently prepared for false failures (mechanism '~all' matched)) receiver=mail.server.com; identity=mailfrom; envelope-from="me@gmail.com"; helo=pmg.server.com; client-ip=5.5.5.5

Received: from pmg.server.com (pmg.server.com [5.5.5.5])

    by mail.server.com (Postfix) with ESMTP id 199DE3EDE2

    for <me@mydomain.com>; Thu, 10 Sep 2020 17:21:33 +0200 (CEST)

Received: from pmg.server.com (localhost.localdomain [127.0.0.1])

    by pmg.server.com (Proxmox) with ESMTP id DCC7041D1E

    for <me@mydomain.com>; Thu, 10 Sep 2020 17:21:32 +0200 (CEST)

Received: from mail-wr1-f42.google.com (mail-wr1-f42.google.com [209.85.221.42])

    by pmg.server.com (Proxmox) with ESMTP id C106841D1D

    for <me@mydomain.com>; Thu, 10 Sep 2020 17:21:27 +0200 (CEST)

Received: by mail-wr1-f42.google.com with SMTP id o5so7083964wrn.13

    for <me@mydomain.com>; Thu, 10 Sep 2020 08:21:27 -0700 (PDT)


Received: from [192.168.1.200] ()

    by smtp.googlemail.com with ESMTPSA id m3sm4825713wme.31.2020.09.10.08.21.20

    for <me@mydomain.com>

    (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128);

    Thu, 10 Sep 2020 08:21:20 -0700 (PDT)

To: me@mydomain.com

From: Me <me@gmail.com>

Subject: testing

X-Spamd-Bar: ++

X-Spam-Level: **

Authentication-Results: mail.server.com;

    dkim=pass header.d=gmail.com header.s=20161025 header.b=P8T51Srz;

    dmarc=pass (policy=none) header.from=gmail.com;

    spf=softfail (mail.server.com: 5.5.5.5 is neither permitted nor denied by domain of me@gmail.com) smtp.mailfrom=me@gmail.com

I have SPF softfail with all senders, even with certain domains (like me@myisp.com) I don't receive mails, I get this in mail.log:

Code: 
to=<me@mydomain.com>, relay=mail.server.com[1.1.1.1]:25, delay=0.45, delays=0.01/0.03/0.01/0.4, dsn=5.7.1, status=bounced (host mail.server.com[1.1.1.1] said: 550 5.7.1 <me@mydomain.com>: Recipient address rejected: Please see http://www.openspf.net/Why?s=mfrom;id=me%40myisp.com;ip=1.1.1.1;r=mail.server.com (in reply to RCPT TO command))

pmg postfix/smtp[20436]: A81D441D1D: to=<me@myisp.com>, relay=mx1.myisp.com[130.117.53.188]:25, delay=8.2, delays=0/0/0.48/7.7, dsn=2.0.0, status=sent (250 OK id=1kGLV6-0007PI-8s)

How can I solve this?
 
Add PMG as trusted relay on mail server?
What if my mail server is a reseller where I don't have admin rights?
 
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