从Postfix + Dovecot发送的邮件被Gmail确认为垃圾邮件

我有一个后缀+ dovecot邮件服务器。 从这个服务器发送到Gmail的邮件进入垃圾邮件。 后缀是在我们的服务器上configuration的，它从来没有用于垃圾邮件。 我还为邮件服务器添加了SPF，DKIM，PTRlogging。 这是我的信息：

Delivered-To: rfsiu0211@gmail.com 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! 

正如你所看到的，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) 

有谁知道可能是什么原因或者我应该采取什么措施？

• Postfix SSL证书validation失败的问题
• Postfix不重试发送延期电子邮件
• Linux – Postfix – 通过ISP阻止端口25发送邮件
• 为什么ip不能被后缀黑名单禁止？
• Postfix邮件服务器（出站）策略