收到cloudns的邮件 内容如下 
Due to continuously over usage of the queries included in your Free DNS plan we are forced to stop processing queries for your zones. 
Please take action as soon as possible and upgrade your account plan to restore your zone operations. 
Regards, 
ClouDNS Team 
由于您的免费 DNS 计划中包含的查询持续过度使用，我们被迫停止处理您的区域的查询。 
请尽快采取行动并升级您的帐户计划以恢复您的区域运营。 
问候， 
ClouDNS 团队 
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