Open DNS

named.conf.local.options
acl "trusted" {
x.x.x.x; 127.0.0.1;
};
(x.x.x.x is dns ip)

options {

version "not currently available";
allow-recursion { trusted; };
allow-notify { trusted; };
allow-transfer { trusted; };
};

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更正
其實只要在options裡加入
allow-recursion { trusted; };
即可
在dnsreport裡有提到