求助：关于账号问题

pcbug

日志显示，收邮件正常：<br>
<-- MAIL FROM: <hm@xxx.com><br>
--> 250 <hm@xxx.com>, Sender ok<br>
<-- RCPT TO: <webmaster@yyy.com><br>
--> 250 <webmaster@yyy.com>, Recipient ok<br>
<-- RCPT TO: <david@yyy.com><br>
--> 250 <david@yyy.com>, Recipient ok<br>
<-- DATA<br>
Creating temp file (SMTP): x:\ma\temp\md50000000011.tmp<br>
--> 354 Enter mail, end with <CRLF>.<CRLF><br>
Message creation successful: x:\ma\inbound\md50000001143.msg<br>
--> 250 Ok, message saved <Message-ID: <000601c56ea5$a40d6e50$6400a8c0@martin>><br><-- QUIT<br>
--> 221 See ya in cyberspace<br>
<br>
但是几秒钟以后却收到一封<br>
Warning: david@yyy.com - User unknown!<br>
不知为何?望前辈指教，谢谢<br>

pcbug

不死心，终于找到问题所在了：<br>
原来的主域让给另外一个域名了，YYY变副域名了，转发规则的邮箱地址没改成完成的XXX@YYY.COM，所以产生了如上问题。亏得我把20几个账号输了三遍，冤大头<br>