大家帮我看看这是怎么回事？

gqin

我是邮件管理员，近日总是收系统自发的信，内容是这样的。<br>
大家帮忙看看是什么问题？<br>
The original message was received at Thu, 20 Jan 2005 11:37:38 +0800<br>
from localhost<br>
with id j0K3bcDJ024617<br>
<br>----- The following addresses had permanent fatal errors -----<br>
x01201222@orgio.net<br>(reason: 550 This account is not allowed...x01201222@orgio.net)<br>
<br>----- Transcript of session follows -----<br>
... while talking to mail2.orgio.net.:<br>
>>> RCPT To:<x01201222@orgio.net><br>
<<< 550 This account is not allowed...x01201222@orgio.net<br>
550 5.1.1 x01201222@orgio.net... User unknown<br>