[求助]还是exchange 问题  不能收邮件 [复制链接]

经奋战，公司exchange 2010已经可以跟外网发邮件了，但是还是不能收到外网邮件。
没有退信提示，就是收不到，队列里面也没有邮件。
内部用户彼此之间也不能收发邮件，同样没有退信提示，但能在队列里看到。


之前出现过一次问题，有过一次退信，是哥们帮我测试的时候，我把退信内容贴下：求解各位：
The following message to <darkz@qk.cn> was undeliverable.
The reason for the problem:
5.x.1 - Maximum number of delivery attempts exceeded. [Default] 450-'4.1.2 <darkz@qk.cn>: Recipient address rejected: Domain not found'
Reporting-MTA: dns; irxd5-182.sinamail.sina.com.cn
Final-Recipient: rfc822;darkz@qk.cn
Action: failed
Status: 5.0.0 (permanent failure)
Remote-MTA: dns; [10.55.5.236]
Diagnostic-Code: smtp; 5.x.1 - Maximum number of delivery attempts exceeded. [Default] 450-'4.1.2 <darkz@qk.cn>: Recipient address rejected: Domain not found' (delivery attempts: 2)
------------------------------------------------------------
From:  "tobeback" <tobeback@sina.com>
To:  "darkz" <darkz@qk.cn>
Subject:  11111111111
Date:  Fri25 Mar 2011 11:39:22 +0800

11111111111111111111
2011-03-25

tobeback
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貌似qk.cn这个域名在DNS里面没有MX记录？