求助！exchange2000无法发送邮件!

chaos000

<br>
<br>
公司的邮箱发不出邮件，返回邮件提示“无法在指定的时间限制内发送邮件”，请教高手是何问题？万分感谢！！<br>
<br>
还有，很多邮件发出后会收到如下的信件<br>
<br>
This is an automatically generated Delivery Status Notification.<br>
<br>
THIS IS A WARNING MESSAGE ONLY.<br>
<br>
YOU DO NOT NEED TO RESEND YOUR MESSAGE.<br>
<br>
Delivery to the following recipients has been delayed.<br>
<br>xxxxx@xxxxxxxxxx.xxx<br>
<br>
请问如何解决？小的万分感谢！！<br>