邮件回执乱码

邮件回执是乱码，不知如何搞定。
望高手赐教。

From - Tue Sep 13 15:23:35 2005
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Date: Tue, 13 Sep 2005 15:22:47 +0800
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Message-ID: <43267E47.4020008@jlpec.com>
Subject: 赞辡�>: -  test
To: =?UTF-8?B?6ZmI54Kc?= <chn@yahoo.com.cn>
References: <43267DE9.5020903@yahoo.com.cn>
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Subject: test
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Status:  O

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切换成UTF-8编码试试

我也和楼主一样，给别人的邮件收条是乱码。
对方是Outlook Express，
我让他改了UTF-8和几个中文的编码格式都试了，怎么看都是乱码。