收到如下退信:
The original message was received at Fri, 17 Apr 2009 10:10:21 +0800 (CST)
from AAAA [192.168.20.25]
----- The following addresses had permanent fatal errors -----
<*******@***.**>
(reason: 501 Domain must resolve)
----- Transcript of session follows -----
... while talking to mail.*****.**.:
<<< 501 Domain must resolve
554 5.0.0 Service unavailable
有人清楚是什么原因不?网上有人说反向解析方面的问题,但还是不知道如何下手,有没有遇到过同样问题的?(这封信是我们的邮件转发服务器发回来的退信)