需要帮助来configuration一个DNS服务器

我想运行一个dns服务器来拥有自己的名字服务器：ns1.radicalteam.ir和ns2.radicalteam.ir
我有一个VPS，并在其上安装了Centos 6.5，而radicalteam.ir和soulati.ir域名我已经将soulati.ir名称服务器设置为ns1.radicalteam.ir和ns2.radicalteam.ir我可以访问radicaalteam.ir，但soulati.ir是无法达到的。 问题是什么 ？？
这是我的configuration绑定：
/etc/named.conf：

options { listen-on port 53 { 185.94.97.188;127.0.0.1; }; allow-query { any; }; Allow-transfer {"none";}; Allow-recursion {"none";}; Recursion no; }; zone "server.radicalteam.ir" { type master; file "/var/named/server.radicalteam.ir.zone"; }; zone "radicalteam.ir" { type master; file "/var/named/radicalteam.ir.zone"; }; 

/var/named/server.radicalteam.ir.zone：

 $TTL 1D @ IN SOA ns1.radicalteam.ir. admin.radicalteam.ir. ( 1 ; serial 1D ; refresh 1H ; retry 1W ; expire 3H ) ; minimum server.radicalteam.ir. IN NS ns1.radicalteam.ir. server.radicalteam.ir. IN NS ns2.radicalteam.ir. server.radicalteam.ir. IN A 185.94.97.188 server.radicalteam.ir. IN MX 0 server.radicalteam.ir. 

/var/named/radicalteam.ir.zone：

 $TTL 1D @ IN SOA ns1.radicalteam.ir. server.radicalteam.ir. ( 0 ; serial 1D ; refresh 1H ; retry 1W ; expire 3H ) ; minimum radicalteam.ir. IN NS ns1.radicalteam.ir. radicalteam.ir. IN NS ns2.radicalteam.ir. radicalteam.ir. IN A 185.94.97.188 ns1 IN A 185.94.97.188 ns2 IN A 185.94.97.188 radicalteam.ir. IN MX 0 radicalteam.ir. www IN CNAME radicalteam.ir. 

nslookup -debug radicalteam.ir

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 Server: 127.0.1.1 Address: 127.0.1.1#53 ------------ QUESTIONS: radicalteam.ir, type = A, class = IN ANSWERS: -> radicalteam.ir internet address = 185.94.97.188 ttl = 86400 AUTHORITY RECORDS: -> radicalteam.ir nameserver = ns2.radicalteam.ir. ttl = 1290 -> radicalteam.ir nameserver = ns1.radicalteam.ir. ttl = 1290 ADDITIONAL RECORDS: -> ns1.radicalteam.ir internet address = 185.94.97.188 ttl = 1290 -> ns2.radicalteam.ir internet address = 185.94.97.188 ttl = 56785 ------------ Non-authoritative answer: Name: radicalteam.ir Address: 185.94.97.188 

ping soulati.ir：

 ping: unknown host soulati.ir 

nslookup soulati.ir：

 Server: 127.0.1.1 Address: 127.0.1.1#53 ** server can't find soulati.ir: SERVFAIL 

nslookup -debug soulati.ir

 Server: 127.0.1.1 Address: 127.0.1.1#53 ------------ QUESTIONS: soulati.ir, type = A, class = IN ANSWERS: AUTHORITY RECORDS: ADDITIONAL RECORDS: ------------ ** server can't find soulati.ir: SERVFAIL