postmaster外发垃圾邮件？

nicemayin

近期公司邮件服务器被列入垃圾邮件服务器，通过邮件追踪，发现有大量postmaster外发的垃圾邮件。邮件服务器不允许匿名中继。切账户中并没有postmaster这个邮箱。
环境：exchange2007 安装边缘服务器。

Return-Path: <MAILER-DAEM**@cngnu.org>
Delivered-To: sp**@cngnu.org
Received: from localhost (localhost [127.0.0.1])
by cngnu.org (Postfix) with ESMTP id 2BAA3630DA
for <sp**@cngnu.org>; Tue, 19 Jun 2012 15:25:43 +0800 (CST)
X-Virus-Scanned: amavisd-new at cngnu.net
X-Spam-Flag: YES
X-Spam-Score: 4.45
X-Spam-Level: ****
X-Spam-Status: Yes, score=4.45 required=4 tests=[AWL=1.157, BAYES_00=-2.312,
HTML_20_30=1.053, HTML_MESSAGE=0.001, INVALID_MSGID=2.054,
MIME_BOUND_MANY_HEX=2.498]
Received: from cngnu.org ([211.157.2.93])
by localhost (amavis.cngnu.net [127.0.0.1]) (amavisd-new, port 10024)
with ESMTP id ER8IgNMTewVM for <sp**@cngnu.org>;
Tue, 19 Jun 2012 15:25:42 +0800 (CST)
Received: from EdgeServer.XXX(代替).Local (XXX(代替).])
by cngnu.org (Postfix) with ESMTP id EF289F6CBB
for <dyerureui**@relationtech.com>; Tue, 19 Jun 2012 15:25:41 +0800 (CST)
Received: fromXXX(代替).(XXX(代替).) by EdgeServer.XXX(代替). (XXX(代替).) with Microsoft SMTP Server (TLS) id 8.1.436.0; Tue, 19 Jun
2012 15:25:42 +0800
MIME-Version: 1.0
From: <postmast**@XXX(代替).>
To: <dyerureui**@relationtech.com>
Date: Tue, 19 Jun 2012 15:25:15 +0800
Content-Type: multipart/report; report-type=delivery-status;
boundary="49447a42-e72e-4ddd-a095-42bd9ccecda7"
Content-Language: zh-CN
Message-ID: <50666c4c-9f31-4cab-b20f-8837cf3bc42e>
In-Reply-To: <3071c91f-e6de-494b-a4b4-03973cc3a8**@XXX(代替).>
References: <3071c91f-e6de-494b-a4b4-03973cc3a8**@XXX(代替).>
Subject: ***SPAM*** =?gb2312?B?zrTLzbTvOiDQwrL6xre/qreiwfezzLrN0dC3og==?=



邮件追踪中也发现大量postmaster的发送邮件。

会不会有这个可能   对方发垃圾邮件给我们，然后未送达产生NDR后 由postmaster发送给垃圾邮件发送者？

所以postmaster发送的邮件被抓去 ，列为垃圾邮件发送证据？

我该如何避免这种情况。。

卖咖啡的

我也是这种情况，你看有没有收到退信，退信中有没有内网邮箱
让他们更改密码，应该就好了