比方说，我们有2个域， domain1.co.za和domain2.co.za 。 两者都指向具有相同优先级的相同MXlogging，mx1.isp.co.za和mx2.isp.co.za，两者都通过我们的ISP过滤/扫描服务发送邮件。 从那里，两个域的邮件都通过SMTP传送到我们的本地Exchange服务器。 换句话说，发送到两个域的消息的路由是完全相同的。
发送到domain1.co.za的消息的退回消息如下所示：
Delivery to the following recipient failed permanently: [email protected] Technical details of permanent failure:=20 Google tried to deliver your message, but it was rejected by the recipient = domain. We recommend contacting the other email provider for further inform= ation about the cause of this error. The error that the other server return= ed was: 571 571 Server listed in SpamCop RBL (state 14). ----- Original message ----- Received: by 10.182.75.65 with SMTP id a1mr18153847obw.32.1326873881149; We= d, 18 Jan 2012 00:04:41 -0800 (PST) MIME-Version: 1.0 Received: by 10.60.8.3 with HTTP; Wed, 18 Jan 2012 00:04:00 -0800 (PST) X-Originating-IP: [41.134.138.227] From: Graeme Donaldson <[email protected]> Date: Wed, 18 Jan 2012 10:04:00 +0200 Message-ID: <[email protected]= il.com> Subject: test To: [email protected] Content-Type: text/plain; charset=3DISO-8859-1 相比之下，成功传送的电子邮件中的SMTP标头如下所示：
Received: from mx2.isp.co.za (196.xyz) by mail.domain1.co.za (172.xyz) with Microsoft SMTP Server id 14.1.323.3; Wed, 18 Jan 2012 10:23:23 +0200 Received: from mail-qy0-f175.google.com (Not Verified[209.85.216.175]) by mx2.isp.co.za with MailMarshal (v6,8,4,9558) id <B4f16817a0000>; Wed, 18 Jan 2012 10:23:22 +0200 Received: by qcsp14 with SMTP id p14so2850129qcs.34 for <[email protected]>; Wed, 18 Jan 2012 00:23:21 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=mime-version:date:message-id:subject:from:to:content-type; bh=oC4vJzzjAUASBEWdam7JzvNUOB1qoyAUm0ztpK7fjwA=; b=I/A2jur39kdKCzu57CHzHzeJNbVqcb/e7WV8SDyulEJTKd942OrM+QYkvF8G5Xwkz4 ssZ/p/geoqop0dgTAvoCMcdE1escL3UH3ob3k3Vgs4FqH2aKWYT7LqG3Eb53Z4Kl++K8 D3sD0I8Eb2nZEPLR2pR0K7s8WAtnGb/XgJAws= MIME-Version: 1.0 Received: by 10.229.76.91 with SMTP id b27mr8321239qck.124.1326875001168; Wed, 18 Jan 2012 00:23:21 -0800 (PST) Received: by 10.229.250.66 with HTTP; Wed, 18 Jan 2012 00:23:21 -0800 (PST) Date: Wed, 18 Jan 2012 10:23:21 +0200 Message-ID: <CANFFNku=7OMQZxXd18LtiA7x7V+uj=wiQkKKdA8F_LhwFwiLVw@mail.gmail.com> Subject: test From: User <[email protected]> To: <[email protected]> Content-Type: multipart/alternative; boundary="001d605b95931b230b04b6c92924" Return-Path: [email protected] X-MS-Exchange-Organization-AuthSource: exch.ad.local X-MS-Exchange-Organization-AuthAs: Anonymous
比较SMTP标题，我注意到有3个“Received：”标题看起来完全在Google的networking中，第4个“Received：”标题是第一次出现在Google的networking中。 看反弹消息，它只有2个“Received：”标题，这让我觉得这个失败在Google的networking中。
谷歌是臭名昭着的这样的东西无法接触，所以我希望别人看到了类似的东西。 有没有人有类似的问题？
这是相关的错误信息：
The error that the other server return= ed was: 571 571 Server listed in SpamCop RBL (state 14).
谷歌的出站服务器之一被SpamCop列入黑名单。 随着人们对networking钓鱼攻击的密码不时出现， 然后，攻击者使用谷歌帐户，并在几个报告后，其中一个谷歌的服务器被列入黑名单。
你可能会考虑不使用MX服务器上的垃圾邮件列表，如果他们在你的控制之下。
如果一定数量的用户将服务器（IP）报告为垃圾邮件服务器，SpamCop会自动将服务器黑名单。 报告停止后，服务器将自动从黑名单中删除。
谷歌显然有不止一个SMTP服务器，每个都有自己的DNScaching。 一台服务器可能会caching黑名单结果。