BINDrecursion不parsing某些域

我有一个recursioncachingBIND /命名设置，它不想解决一些域。 我在日志文件中看到这些错误：

Dec 22 11:53:02 router2.lan named[301]: skipping nameserver 'ns0.flowerfire.com' because it is a CNAME, while resolving 'www.sawmill.net/AAAA' Dec 22 11:53:02 router2.lan named[301]: SERVFAIL unexpected RCODE resolving 'www.sawmill.net/A/IN': 63.249.66.124#53 Dec 22 11:53:02 router2.lan named[301]: skipping nameserver 'ns0.flowerfire.com' because it is a CNAME, while resolving 'www.sawmill.net/A' Dec 22 11:53:02 router2.lan named[301]: skipping nameserver 'ns1.flowerfire.com' because it is a CNAME, while resolving 'www.sawmill.net/A' Dec 22 11:53:02 router2.lan named[301]: SERVFAIL unexpected RCODE resolving 'www.sawmill.net/AAAA/IN': 63.249.66.124#53 Dec 22 11:53:02 router2.lan named[301]: skipping nameserver 'ns0.flowerfire.com' because it is a CNAME, while resolving 'www.sawmill.net/AAAA' Dec 22 11:53:02 router2.lan named[301]: skipping nameserver 'ns1.flowerfire.com' because it is a CNAME, while resolving 'www.sawmill.net/AAAA' 

（该域名不是我的）
谷歌的8.8.8.8正确parsing这个域名

这是我的named.conf

 options { directory "/var/named"; pid-file "/run/named/named.pid"; listen-on-v6 { any; }; dnssec-validation auto; auth-nxdomain no; allow-query { any; }; recursion yes; allow-recursion { any; }; allow-transfer { none; }; allow-update { none; }; version none; hostname none; server-id none; max-cache-size 16M; max-ncache-ttl 3600; }; 

和BIND版本：
BIND 9.11.0-P1

• BIND 9：loggingcaching命中和未命中
• DNS故障 – 缺less条目
• 像这样configuration服务器和DNS：接受所有使用我们的特定域名服务器的域名
• 如果我删除它，DNS正向查找区域会重新创build吗？
• ActiveDirectory DNS – 基于Web的pipe理

有谁知道为什么会发生这种情况？

顺便说一句，服务器是防火墙，所以没有任何损害，允许所有来源的recursion。

 Dec 22 11:53:02 router2.lan named[301]: skipping nameserver 'ns0.flowerfire.com' because it is a CNAME, while resolving 'www.sawmill.net/A' Dec 22 11:53:02 router2.lan named[301]: skipping nameserver 'ns1.flowerfire.com' because it is a CNAME, while resolving 'www.sawmill.net/A'