Correio Postfix indo para spam no Gmail e Hotmail (tentei de tudo, ainda não consegui, ok)

Correio Postfix indo para spam no Gmail e Hotmail (tentei de tudo, ainda não consegui, ok)

Alguém ajude, por favor, isso não é duplicado. Analisei todas as respostas que encontrei na web, tentei coisas diferentes, mas ainda não consigo não ir para a pasta de spam.

Executando postfix, dovecot, mysql, spamassassin com Let's Encrypt SSL, DKIM válido, passes SPF e até mesmo passes DMARC, o registro PTR é definido. Até configurei o ClamAV e o Amavis pensando que poderia ajudar, mas não, ainda vai para a pasta de spam.

nome do host é mail.devexus.net

arquivo /etc/hosts

127.0.0.1       localhost.localdomain locahost
127.0.0.1       mail.devexus.net mail.devexus.net

# The following lines are desirable for IPv6 capable hosts
::1     localhost ip6-localhost ip6-loopback
ff02::1 ip6-allnodes
ff02::2 ip6-allrouters

Aqui está o cabeçalho de um e-mail que foi enviado para spam

Delivered-To: ******[email protected]
Received: by 10.223.157.140 with SMTP id p12csp2909027wre;
    Sun, 25 Feb 2018 07:51:44 -0800 (PST)
X-Google-Smtp-Source: AH8x2255Y4AJYhkzAtmNyXjg6EXKfjKkDdW4PEpRAU7WNCosBkiBYoIY9mVfHqjwzW8JIO8FXzBr
X-Received: by 10.223.153.51 with SMTP id x48mr6599051wrb.216.1519573904411;
    Sun, 25 Feb 2018 07:51:44 -0800 (PST)
ARC-Seal: i=1; a=rsa-sha256; t=1519573904; cv=none;
    d=google.com; s=arc-20160816;
    b=PQ3hgo3pcKq5shaqCnhyL/LuZi4XTqCYeRzs2z+i3idyjKojNI6W0dOwUcsQ6HvLVP
     06ydM+/EskBiSPCq/3XJA8hjZtZJM3gEn1ih/3jgQ+xX9OorFijNJbx5SDI32VQzgqI7
     baDdWnY1kzadUt/O5Tvq3UamrL4LXuMu6MPTCWdcyIf30kj5YbZEExRWm6OT5ajxJpzH
     Z8v5hfhpMrhmKzjZOIIz0zqfvEU5tWioWsfeT7CeY0Xwr20g2sY7vsgiduPc4dQW8Ap/
     c6MjjqnvBZZtR6az7wC1tDBwUabStYd3awDdeKKAM0T5CEH4vvp3cx29438Kld97vO22
     WJcg==
ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816;
    h=content-language:thread-index:mime-version:message-id:date:subject
     :to:from:dkim-signature:arc-authentication-results;
    bh=Z3lrmhLvqaXWgZHr1L2mZDXf0ZVz4IExOW69HEUJfb4=;
    b=0BJAYc50K6tzZfso9gBAkj+fKwvgBzKLqbg0lY8wVFufwmt+E87QLNLL/1lAkumYzH
     FwvI0tl0iwgI+NTZZlwombAkk/YQ794g0HwPy25ytHuJWZPLMuiM+AUnyyESdFmvt19q
     nwuiQBxQVf40UdheSZsEZdF4ya1ryxcCWPQe6b3rAJ5dxpkmexbRAAi/8+j/PNZhHH7w
     NB91BWUez779FUUSJ514lorX+EslrdbdnxybSjsuOQQvtk+jiIrjAYBsimMW7ERXhXDf
     eKNXKDHlHqxe7Yxy5YwEccbQgNAzUtYYyBWqSL4gXObxBpoSwsxO6aZKFIYxmb+SBML/
     dHkg==
ARC-Authentication-Results: i=1; mx.google.com;
   dkim=pass [email protected] header.s=dkim header.b=emYycQeQ;
   spf=pass (google.com: domain of [email protected] designates 139.162.133.174 as permitted sender) [email protected];
   dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=devexus.net
Return-Path: <[email protected]>
Received: from mail.devexus.net (mail.devexus.net. [139.162.133.174])
    by mx.google.com with ESMTPS id g85si303716wmc.109.2018.02.25.07.51.43
    for <******[email protected]>
    (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128);
    Sun, 25 Feb 2018 07:51:43 -0800 (PST)
Received-SPF: pass (google.com: domain of [email protected] designates 139.162.133.174 as permitted sender) client-ip=139.162.133.174;
Authentication-Results: mx.google.com;
   dkim=pass [email protected] header.s=dkim header.b=emYycQeQ;
   spf=pass (google.com: domain of [email protected] designates 139.162.133.174 as permitted sender) [email protected];
   dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=devexus.net
Received: from localhost (localhost.localdomain [127.0.0.1]) by mail.devexus.net (Postfix) with ESMTP id 55F9C40611 for <******[email protected]>; Sun, 25 Feb 2018 16:51:43 +0100 (CET)
X-Virus-Scanned: Debian amavisd-new at devexus.net
Received: from mail.devexus.net ([127.0.0.1]) by localhost (mail.devexus.net [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id kqtOTuX741RJ for <*****[email protected]>; Sun, 25 Feb 2018 16:51:42 +0100 (CET)
Received: from DESKTOP7GKF188 (unknown [178.255.152.117]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.devexus.net (Postfix) with ESMTPSA id 866AC40610 for <*******[email protected]>; Sun, 25 Feb 2018 16:51:42 +0100 (CET)
DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=devexus.net; s=dkim; t=1519573902; bh=P9Z5q9aBS0MUY38+pDbc0mHCDxxG0wexgOdThxSzofY=; h=From:To:Subject:Date:From; b=emYycQeQi2isvGEuU4MLbaI1lZ2mQRW18Um4bHJZtj1zCiQepXd190e9mFwI4/uAO
 99pFnrrYAQ5Ps6RDgOvt3CB1wkix9tA+olq7v2KZeHdKhOT1VFDsSKP3Juz6b0cPAo
 jTiZe2D+g+f6/v6g8AN3qm12xVirCMdJGITlBJic=
From: "Ivan Katić" <[email protected]>
To: <******[email protected]>
Subject: Checking how are you
Date: Sun, 25 Feb 2018 16:51:40 +0100
Message-ID: <[email protected]>
MIME-Version: 1.0
Content-Type: multipart/related; boundary="----=_NextPart_000_0014_01D3AE58.E924E260"
X-Mailer: Microsoft Outlook 15.0
Thread-Index: AdOuUH8IeFWERzCMR9u6GZm4/M8Ohg==
Content-Language: hr

IP verificado, não está na lista negra em lugar nenhum.

Então, qual ainda poderia ser o problema?

O problema talvez seja algo com "Recebido de" e hosts e nome do host?

O problema é "mail.devexus.net"? Devo remover o correio. e sair apenas com devexus.net?

Isso está sendo hospedado no linode, isso poderia ser um problema?

Estou seriamente enlouquecendo aqui, já se passaram 2-3 dias tentando descobrir isso :/

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