我一直在努力弄清楚为什么会发生这种情况，但我的电子邮件被 Gmail 和 Hotmail 标记为垃圾邮件(它们在雅虎工作。)
SPF、DKIM、rDNS 和发件人 ID 均通过。更奇怪的是，我已经从我的开发服务器发送了完全相同的电子邮件，其中包含其确切内容，Gmail 将其视为非垃圾邮件，即使在生产中通过的每一项检查在开发中都失败了。 Hotmail 仍然将其标记为垃圾邮件。
知道会发生什么吗？以下是 Gmail 的示例 header (出于隐私原因更改了 IP 和域):
Delivered-To: REMOVED@gmail.com
Received: by 10.194.16.130 with SMTP id g2csp192349wjd;
Mon, 13 Aug 2012 14:04:10 -0700 (PDT)
Received: by 10.236.193.105 with SMTP id j69mr12819871yhn.21.1344891849751;
Mon, 13 Aug 2012 14:04:09 -0700 (PDT)
Return-Path: <mailer@mydomain.com>
Received: from mail.mydomain.com (mydomain.com. [xxx.xxx.xxx.xxx])
by mx.google.com with ESMTPS id e22si563514yhh.132.2012.08.13.14.04.08
(version=TLSv1/SSLv3 cipher=OTHER);
Mon, 13 Aug 2012 14:04:09 -0700 (PDT)
Received-SPF: pass (google.com: domain of mailer@mydomain.com designates xxx.xxx.xxx.xxx as permitted sender) client-ip=xxx.xxx.xxx.xxx;
Authentication-Results: mx.google.com; spf=pass (google.com: domain of mailer@mydomain.com designates xxx.xxx.xxx.xxx as permitted sender) smtp.mail=mailer@mydomain.com; dkim=pass header.i=@mydomain.com
Received: from mydomain.com (localhost [127.0.0.1])
by mail.mydomain.com (8.14.4/8.14.4/Debian-2ubuntu1) with ESMTP id q7DL48tq019625
for <REMOVED@gmail.com>; Mon, 13 Aug 2012 17:04:08 -0400
X-DKIM: OpenDKIM Filter v2.3.2 mail.mydomain.com q7DL48tq019625
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=mydomain.com;
s=server; t=1344891848;
bh=lpw+5POmINBjQYgQBdJvY2d+m84MY8hwTqZ6riNfH8I=;
h=Date:From:To:Message-ID:Subject:Mime-Version:Content-Type:
Content-Transfer-Encoding;
b=KnYSvSzFewOGFyYWvP1DfCvyRfp6y31BfOPTOgRsZ7nGB4PXuau84euzuhs82V4lx
++DjN3iPxSj07euW+y7aRe9R2YiXKJFVNh7cbcJX8+tc3LMmnR7Cv27iP3Yvv6mQMd
uz4Engql3bXLVVDKcLLj/Fj2eiwtWzW4chA2GNTQ=
Received: (from root@localhost)
by mydomain.com (8.14.4/8.14.4/Submit) id q7DL48Dm019624
for REMOVED@gmail.com; Mon, 13 Aug 2012 17:04:08 -0400
Date: Mon, 13 Aug 2012 17:04:08 -0400
From: "Website" <mailer@mydomain.com>
To: REMOVED@gmail.com
Message-ID: <50296bc866dfc_4b8593bd18556b8@mydomain.com.mail>
Subject: You've received a message from Bob.
Mime-Version: 1.0
Content-Type: text/html;
charset=UTF-8
Content-Transfer-Encoding: 7bit
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=mydomain.com; q=dns/txt; s=server; t=1344891848; bh=LfadLl6eJEB+NgiTbBlcBhOt/9NKcG0wapkrAjlGqfg=; h=content-transfer-encoding:content-type:date:from:message-id:mime-version:subject:to; b=mTB8TBb+gG7ESxeVbfqHANKUMeNbdwK/hSIq58oin5ERNSMKOIvZKY9cQJRoY/Q96PQ7J+7b3ZkZuwcg+zMkQyhK7YACvFAz4SUWqpdqiZrBDw8Vqy3PjkGFcz2V5vyUOjI6vN/Y6iOj1zlocC+/p8lkpw3upwxr7cNoe5/Kwu8=
最佳答案
另一个人不知道他在说什么，只是猜测。
'收到:(来自 root@localhost)' 是你的问题。这需要反射(reflect)来自电子邮件...
关于标记为垃圾邮件的电子邮件 - SPF 通过、DKIM 通过、发件人 ID 通过，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/11942459/