关于邮件头信息。急急！！

398312463

Received: from 163.com by 111.com(MDaemon PRO v10.1.1)
with ESMTP id md50003935279.msg;
Mon, 22 Nov 2010 00:26:20 +0800
X-Spam-Processed: 111.com, Mon, 22 Nov 2010 00:26:20 +0800
(not processed: message from trusted or authenticated source)
X-Authenticated-Sender: a@111.com
X-MDRemoteIP: 222.128.129.213
X-Return-Path: [email=prvs=1941673eef=a@222.com]prvs=1941673eef=a@222.com[/email]
X-Envelope-From:a@222.com
Date: Mon, 22 Nov 2010 00:26:09 +0800
From: =?gb2312?B?zt7Tx8nMzvE=?= <994010101@qq.com>
To: <dgang121@126.com>
Subject: =?gb2312?B?0Pu0q8bz0rWhoszhyf3StbyosdixuKOhMDoyNjowOQ==?=
Mime-Version: 1.0
Content-Type: multipart/alternative;
boundary="----=_NextPart_001_0072_01CA3EAF.026251A4"
X-Priority: 3
X-MSMail-Priority: Normal
X-Mailer: Microsoft Outlook Express
X-MimeOLE: Produced By Microsoft MimeOLE
Disposition-Notification-To:994010101@qq.com

以上是一封邮件的邮件头信息，这封邮件放到邮件箱显示的是994010101@qq.com发给dgang121@126.com
但是我的域是111.com,很明显这是一封被攻击的信件。
但是sender处是a@111.com，这两个地方显示的是X-Return-Path: [email=prvs=1941673eef=a@222.com]prvs=1941673eef=a@222.com[/email]
X-Envelope-From:a@222.com
另外的222.com，222.com是存在的，但是里面没有a账户的，这又是怎么回事呢？到底哪个人才是真正的发件人呢？？？

最近频繁出现了这样的状况，很是心痛，这些邮件都是无关紧要的垃圾邮件……
还是请各位大侠们帮忙看看吧~~~~~~~

398312463

各位大侠帮我看一眼吧。。。。。~~~~~~~

398312463

版主，能不能帮下忙呢~~~~~~~~~呼吁……