我是设置对几个大型Web主机的DNS服务器进行监控的过程.
我的目标是通过跟踪他们对ping的响应来比较他们的DNS服务器响应时间.
我的目标是通过跟踪他们对ping的响应来比较他们的DNS服务器响应时间.
在此过程中,我发现Bluehost名称服务器不响应ping.
我试图通过运行Pingdom DNS Check on bluehost.com来获取更多信息,它产生了以下错误：
Name server ns1.bluehost.com (74.220.195.31) does not answer queries over TCP.
The name server Failed to answer queries sent over TCP. This is probably due to the name server not correctly set up or due to misconfgured filtering in a firewall. It is a rather common misconception that DNS does not need TCP unless they provide zone transfers – perhaps the name server administrator is not aware that TCP usually is a requirement.
我想知道以下内容：
