his is the mail system at host mail.skoon.com.cn.

I'm sorry to have to inform you that your message could not
be delivered to one or more recipients. It's attached below.

For further assistance, please send mail to postmaster.

If you do so, please include this problem report. You can
delete your own text from the attached returned message.

                   The mail system

<changelife1130@hotmail.com>: host mx3.hotmail.com[65.54.188.126] said: 550
    DY-001 Mail rejected by Windows Live Hotmail for policy reasons. We
    generally do not accept email from dynamic IP's as they are not typically
    used to deliver unauthenticated SMTP e-mail to an Internet mail server.
    http://www.spamhaus.org maintains lists of dynamic and residential IP
    addresses. If you are not an email/network admin please contact your
    E-mail/Internet Service Provider for help. Email/network admins, please
    visit http://postmaster.live.com for email delivery information and support
    (in reply to MAIL FROM command)

Reporting-MTA: dns; mail.skoon.com.cn
X-iRedMail-Queue-ID: 8BEE223380AB
X-iRedMail-Sender: rfc822; zhaohui@skoon.com.cn
Arrival-Date: Tue, 19 Jan 2010 17:44:34 +0800 (CST)

Final-Recipient: rfc822; changelife1130@hotmail.com
Original-Recipient: rfc822;changelife1130@hotmail.com
Action: failed
Status: 5.0.0
Remote-MTA: dns; mx3.hotmail.com
Diagnostic-Code: smtp; 550 DY-001 Mail rejected by Windows Live Hotmail for
    policy reasons. We generally do not accept email from dynamic IP's as they
    are not typically used to deliver unauthenticated SMTP e-mail to an
    Internet mail server. http://www.spamhaus.org maintains lists of dynamic
    and residential IP addresses. If you are not an email/network admin please
    contact your E-mail/Internet Service Provider for help. Email/network
    admins, please visit http://postmaster.live.com for email delivery
    information and support

今天不知道迁移的时候，不知道糊涂了还是怎么回事？
把domain原本为xxxxx.com.cn  写成了mail.xxxxx.com.cn
如果不重装的话，能不能直接改配置文件改回来？
需要改哪些呀？