配置 Sendmai 发生的问题

jimmymaster

新配置一个sendmail + cyrus-imapd + cyrus+sasl 等 rpm安装包，
在Sendmail.mc里面只动过
DAEMON_OPTIONS(`Port=smtp,Addr=0.0.0.0, Name=MTA') 和添加 MAILER(cyrusv2)
然后在access文件里relay了准备发邮件的主机IP。
但在OutLook下发送root用户邮件后，用webmin查看该root用户的邮件如下:
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来自 Mail Delivery Subsystem <MAILER-DAEMON@Cluster-2.jimmy.net>
发往 postmaster@Cluster-2.jimmy.net
日期 01/10/2010 17:04
主题 Postmaster notify: see transcript for details


Message contents  
The original message was received at Fri, 1 Oct 2010 17:04:20 +0800
from localhost
with id o9194K6G009927

   ----- The following addresses had permanent fatal errors -----
<jimmymaster@21cn.com>
    (reason: 554 Original IP "58.49.161.127" blacklisted by Zodiac, ID:10.27.2.3-1285927717-44957,
Time: 20101001,18:08:46)

   ----- Transcript of session follows -----
... while talking to mta.21cn.com.:
>>> DATA
<<< 554 Original IP "58.49.161.127" blacklisted by Zodiac, ID:10.27.2.3-1285927717-44957,
Time: 20101001,18:08:46
554 5.0.0 Service unavailable


Failed delivery status
Final recipient jimmymaster@21cn.com
Reason for failure 554 Original IP "58.49.161.127" blacklisted by Zodiac, ID:10.27.2.3-1285927717-44957, Time: 20101001,18:08:46
Remote mail server mta.21cn.com
Reporting mail server Cluster-2.jimmy.net

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里面有个blacklisted by Zodiac 是不是添加到某个黑名单里去了，请问该如何修改这个？