我有一个 postfix + dovecot 邮件服务器。从此服务器发送到 gmail 的邮件会被归为垃圾邮件。postfix 已在我们的服务器上配置，并且从未用于发送垃圾邮件。我还为邮件服务器添加了 SPF、DKIM、PTR 记录。以下是我的消息：
Delivered-To: [email protected]
Received: by 10.140.19.162 with SMTP id 31csp634153qgh;
Wed, 30 Aug 2017 02:51:19 -0700 (PDT)
X-Received: by 10.98.76.208 with SMTP id e77mr982568pfj.81.1504086679398;
Wed, 30 Aug 2017 02:51:19 -0700 (PDT)
ARC-Seal: i=1; a=rsa-sha256; t=1504086679; cv=none;
d=google.com; s=arc-20160816;
b=TVGocTjddxWNeDlOV3lPvxxTbsCoSAL6qua+PyRwBXKuAipDwkeau0pNNmF+o0Pp6G
BxzFI1Uoa8a4bBjXKlu6rVWDJIHS0cdAEdV82kIYRLigbfag6TsFEgVIqfwHCGiRCtJk
lJNor0VNaiiUI3/PRKyyf98CDSljpboqVnacN/3u00UoI/eLDF3NipT/gcBlSf6Wt/n3
LhWncsYvq/KLQkh+VUGX121yS6hteuxWIshEamhVJHhrIf9dvNnzmRyGoCyIXMRJMuKb
Ndt/NFmub9P9kHMqsl7KaHvq60LJ+kcMBD1IvojKXfgvGPMjVjK5eXgo9U0ZEMO/2nYd
Qy9Q==
ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816;
h=content-language:content-transfer-encoding:mime-version:user-agent
:date:message-id:subject:from:to:dkim-signature:dkim-filter
:arc-authentication-results;
bh=tuhOtE9qjqASd8ZqCLUVOhKViWPHByzhGrNam6uFrTI=;
b=DnihaFq6QvjVGL5a1SctZbXlln6pGLzbT0CMA+foquGp0TdQB24SD4VqhRGLcuNuTC
zREg/9yPBbaEgC/0dqnNcPwD8JqT3sI2/8bneEeXvGml3hYPokq4UO72bVd5+JlH4Hrv
Z14y7n7PrY30K7WMCscgn/EeDNw4UxFKluEdoImGDHskOde+02evqonFnrBsYS6xVKxI
hGlkyJzt8WU3iUyKYlE3UqtBHNXj20fibQy0w4Gwdh7bPylrzaDqT1IfViwYA3rORZLX
/FZdJLbKoMkwY1dCmRnPBSaAxzqaS8VcdJ/LXKOumUknELweFf1tJ2qbTgQQ9BH/GMH1
3Zdw==
ARC-Authentication-Results: i=1; mx.google.com;
dkim=pass [email protected] header.s=mail header.b=EACm4P8M;
spf=pass (google.com: domain of [email protected] designates 119.17.215.32 as permitted sender) [email protected]
Return-Path: <[email protected]>
Received: from mail.chungtoi.com (mail.chungtoi.com. [119.17.215.32])
by mx.google.com with ESMTPS id p64si4027806pga.272.2017.08.30.02.51.18
for <[email protected]>
(version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128);
Wed, 30 Aug 2017 02:51:19 -0700 (PDT)
Received-SPF: pass (google.com: domain of [email protected] designates 119.17.215.32 as permitted sender) client-ip=119.17.215.32;
Authentication-Results: mx.google.com;
dkim=pass [email protected] header.s=mail header.b=EACm4P8M;
spf=pass (google.com: domain of [email protected] designates 119.17.215.32 as permitted sender) [email protected]
Received: from akai.home (unknown [101.96.120.42]) (Authenticated sender: [email protected]) by mail.chungtoi.com (Postfix) with ESMTPSA id 8001B12CFF0B for <[email protected]>; Wed, 30 Aug 2017 16:51:21 +0700 (ICT)
DKIM-Filter: OpenDKIM Filter v2.11.0 mail.chungtoi.com 8001B12CFF0B
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=chungtoi.com; s=mail; t=1504086681; bh=tuhOtE9qjqASd8ZqCLUVOhKViWPHByzhGrNam6uFrTI=; h=To:From:Subject:Date:From; b=EACm4P8MjbGaoYbktN+dJu0cm1PCSIUKOv8wEcg8b0ZG/p/zF8JVfxXRIN49xGI+8
zA0Pl3IX5WIPeT9if/B8iqw27mopYggxeQJUT+MX17T95X7Z49QrwI86H/QlrFNHB8
Lkhb/v2OOHGYBRe9k7oEroi4bViWJyLahMxcUcI4=
To: "Thư Bùi" <[email protected]>
From: Thu Bui <[email protected]>
Subject: Cập nhật bản ghi
Message-ID: <[email protected]>
Date: Wed, 30 Aug 2017 16:51:17 +0700
User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.1.0
MIME-Version: 1.0
Content-Type: text/plain; charset=utf-8; format=flowed
Content-Transfer-Encoding: 8bit
Content-Language: en-US
Các bạn nhận được thì gửi lại thông tin cho mình nhé!
如您所见，我的邮件服务器设置如下：
- The server has DKIM
- The server has a verified signed certificate
- SPF(TXT) is set correctly
- The server's PTR (reverse DNS) points correctly to my mail server
- All possible checking tools give a maximum result for the server (it should be trusted by everyone)
有人知道可能是什么原因或者我应该采取什么措施吗？
答案1
您是否尝试过发送包含更多个性化内容的电子邮件？我似乎记得，即使设置没有其他问题，gmail 也会将像您这样的短邮件视为垃圾邮件。
根据帮助页面关于 Gmail 中的垃圾邮件：
Gmail 会自动识别垃圾邮件和可疑邮件，并将这些邮件标记为垃圾邮件。打开垃圾邮件标签时，您会看到被您或 Gmail 标记为垃圾邮件的所有邮件。每封邮件顶部都会有一个标签，说明将其发送到垃圾邮件的原因。
如果是这种情况，您应该在垃圾邮件文件夹中的邮件顶部看到如下原因：
这封邮件为何被归为垃圾邮件？这与我们的垃圾邮件过滤器检测到的消息类似。了解更多
否则，如果您的邮件的具体内容触发了垃圾邮件过滤器，您也可能会看到这样的消息：
这封邮件为何被归为垃圾邮件？它包含垃圾邮件中常用的内容了解更多