exchange 问题

freedream

exchange做的email服务器，突然之间所有的邮件都不能收发了，发邮件出去就会返回个报错邮件<br>
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There was a SMTP communication problem with the recipient's email server. Please contact your system administrator.<br><*****.*******.*** #5.5.0 smtp;554 Connection refused(mx). MAIL FROM [Administrator@*******.***] mismatches client IP [**********].><br>
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哪位遇到过类似问题的dx帮忙解答一下啊！<br>

ququ

把IMS删掉，再装一次