c# - Gmail / Hotmail将电子邮件标记为垃圾邮件

使用Gmail中的显示原始命令比较两封电子邮件（squirrelmail与SmtpClient）的MIME输出，并在此处发布差异。

另外，请检查SmtpClient SMTP设置。

尝试使用PHP mail（）函数发送标头，该函数将“发件人”地址指定为服务器上的有效电子邮件地址。也就是说：在您的网络服务器上创建一个电子邮件帐户以“发送”电子邮件，然后让PHP脚本报告您发送的来自该帐户的邮件。我使用我的邮件程序执行此操作，并且没有任何垃圾邮件过滤问题。

您应该考虑使用dkim对邮件进行签名。

见 http://www.dkim.org/

或

http://en.wikipedia.org/wiki/DomainKeys_Identified_Mail

关于您的垃圾邮件与干净的电子邮件内容，请查看“垃圾邮件”消息中的x-spam-status字段。您可以通过检查针对spamassassin描述标记的测试来尝试找出问题所在：

http://spamassassin.apache.org/tests_3_2_x.html

垃圾邮件电子邮件输出：

Delivered-To: there.test.hey@gmail.com
Received: by 10.140.252.20 with SMTP id z20cs531261rvh;
        Thu, 13 Aug 2009 17:05:42 -0700 (PDT)
Received: by 10.115.117.7 with SMTP id u7mr1383293wam.152.1250208342113;
        Thu, 13 Aug 2009 17:05:42 -0700 (PDT)
Return-Path: 
Received: from n19.c05.mtsvc.net (n19.c05.mtsvc.net [70.32.68.19])
        by mx.google.com with ESMTP id 29si1711715pzk.0.2009.08.13.17.05.41;
        Thu, 13 Aug 2009 17:05:41 -0700 (PDT)
Received-SPF: neutral (google.com: 70.32.68.19 is neither permitted nor denied by best guess record for domain of admin@flatfinderadmin.com) client-ip=70.32.68.19;
Authentication-Results: mx.google.com; spf=neutral (google.com: 70.32.68.19 is neither permitted nor denied by best guess record for domain of admin@flatfinderadmin.com) smtp.mail=admin@flatfinderadmin.com
Received: from [96.49.122.252] (port=18788 helo=sk1)
    by n19.c05.mtsvc.net with esmtpa (Exim 4.63)
    (envelope-from )
    id 1MbkIe-00078B-BG
    for there.test.hey@gmail.com; Thu, 13 Aug 2009 17:05:40 -0700
MIME-Version: 1.0
From: admin@flatfinderadmin.com
To: there.test.hey@gmail.com
Date: 13 Aug 2009 17:05:42 -0700
Subject: Flat Finder Site Submitted Contact Form
Content-Type: text/html; charset=us-ascii
Content-Transfer-Encoding: quoted-printable
Message-Id: 
X-Authenticated-User: 75266 admin@flatfinderadmin.com
X-Spam-Status: "score=3.7 tests=ALL_TRUSTED, HTML_IMAGE_ONLY_16, HTML_MESSAGE,
    HTML_SHORT_LINK_IMG_2, MIME_HTML_ONLY, NO_REAL_NAME version=3.1.7
    cmae=v=1.0 c=1 a=Bu8eb_7rEXsA:10 a=wNIIKIUcX8P6fymBW3VY0A==:17
    a=SSmOFEACAAAA:8 a=btttyEYfAAAA:8 a=P_WOZhPR8xpSgznosTMA:9 a=L7jHSo-IajUz1O2H4c4A:7
    a=c8QRsX8pXm0wgMQia4dzJuyZCb0A:4 a=L0MSjj-u4uAA:10 a=MSl-tDqOz04A:10
    xcat=Undefined/Undefined"
X-Spam-Level: ***

=
=0D=0A=0D=0A=0D=0A =
   Site Contact=0D=0A=0D=0A=
=0D=0A    =0D=0A        =0D=0A    =0D=0A    =0D=0A    =
=0D=0A        =0D=0A            =0D=0A                A visitor=
 to the site has submitted the following info through the contact form:=
=0D=0A            =0D=0A        
=0D=0A        =0D=0A        =0D=0A            =0D=0A                User: John Doe=0D=0A                Email: doyouunderstand@gmail.com
=0D=0A=
                Message: Testing=0D=0A            =0D=0A        =
=0D=0A    =0D=0A=0D=0A=0D=0A

良好的电子邮件输出：

Delivered-To: there.test.hey@gmail.com
Received: by 10.140.252.20 with SMTP id z20cs531296rvh;
        Thu, 13 Aug 2009 17:07:24 -0700 (PDT)
Received: by 10.115.100.20 with SMTP id c20mr1379009wam.75.1250208443895;
        Thu, 13 Aug 2009 17:07:23 -0700 (PDT)
Return-Path: 
Received: from n17.c05.mtsvc.net (n17.c05.mtsvc.net [70.32.68.17])
        by mx.google.com with ESMTP id 13si1834503pzk.161.2009.08.13.17.07.23;
        Thu, 13 Aug 2009 17:07:23 -0700 (PDT)
Received-SPF: neutral (google.com: 70.32.68.17 is neither permitted nor denied by best guess record for domain of admin@flatfinderadmin.com) client-ip=70.32.68.17;
Authentication-Results: mx.google.com; spf=neutral (google.com: 70.32.68.17 is neither permitted nor denied by best guess record for domain of admin@flatfinderadmin.com) smtp.mail=admin@flatfinderadmin.com
Received: from localhost ([127.0.0.1]:60628 helo=s75266.gridserver.com)
    by n17.c05.mtsvc.net with esmtp (Exim 4.63)
    (envelope-from )
    id 1MbkKH-0006Xh-OF
    for there.test.hey@gmail.com; Thu, 13 Aug 2009 17:07:23 -0700
Received: from 96.49.122.252 (proxying for 96.49.122.252)
        (SquirrelMail authenticated user admin@flatfinderadmin.com)
        by s75266.gridserver.com with HTTP;
        Thu, 13 Aug 2009 17:07:21 -0700 (PDT)
Message-ID: 
Date: Thu, 13 Aug 2009 17:07:21 -0700 (PDT)
Subject: Flat Finder Site Submitted Contact Form
From: admin@flatfinderadmin.com
To: there.test.hey@gmail.com
User-Agent: SquirrelMail/1.4.9a
MIME-Version: 1.0
Content-Type: text/plain;charset=iso-8859-1
Content-Transfer-Encoding: 8bit
X-Priority: 3 (Normal)
Importance: Normal
X-Spam-Status: "score=-0.9 tests=ALL_TRUSTED, NO_REAL_NAME version=3.1.7 cmae=v=1.0
    c=1 a=Bu8eb_7rEXsA:10 a=wNIIKIUcX8P6fymBW3VY0A==:17 a=oHM1V9sc3__v4s30wF0A:9
    a=AUDcTUBt7KQaFxkMUcF7gsiVO_sA:4 xcat=Undefined/Undefined"
X-Spam-Level: 

Testing

可能您错过了MIME信息中的编码，或者未设置或不同的回复邮件使其看起来像假的。如果没有看到你正在/不填写的参数，很难说。

SLaks的答案也是很好的一步。

考虑到来自服务器的其他电子邮件未被标记，黑名单或缺少参数的可能性不大。

Gmail / Hotmail将电子邮件标记为垃圾邮件

5 个答案: