帮我分析一下原因:邮箱退信如下

siny222

无法将您的邮件投递至以下指定地址:<br>
siny222@163.com <br>
<br>
<br>
//---------------------------------------------------------- <br>
Received: Wed, 31 Aug 2005 10:36:47 +0800 <br>
From: Mu5BK< <wangdesi@chinagci.com> <br>
To: siny222@163.com <br>
Subject: Wb2312?Q?要提交意见?Date: Wed, 31 Aug 2005 10:36:47 +0800 <br>
Mime-Version: 1.0 <br>
X-MSMail-Priority: Normal <br>
Content-Type: text/plain; charset嘼2312" <br>
Content-Transfer-Encoding: quoted-printable <br>

rayer

版本太老，升级到3701就OK了