一个简单的dns服务器

options {
	listen-on port 53 { any; };
	listen-on-v6 port 53 { any; };
	directory 	"/srv/app/named";
	dump-file 	"/srv/app/named/data/cache_dump.db";
	statistics-file "/srv/app/named/data/named_stats.txt";
	memstatistics-file "/srv/app/named/data/named_mem_stats.txt";
	recursing-file  "/srv/app/named/data/named.recursing";
	secroots-file   "/srv/app/named/data/named.secroots";
	allow-query     { any; };
        forward only;
        forwarders { 1.2.4.8; 180.76.76.76; 114.114.114.114; 192.168.59.241; };
	recursion  yes;
        max-cache-ttl  600;
        max-ncache-ttl 600;
        version "[no version.]";
        minimal-responses yes;
	dnssec-enable  no;
	dnssec-validation  no;
	bindkeys-file "/etc/named.iscdlv.key";
	managed-keys-directory "/srv/app/named/dynamic";
	pid-file "/run/named/named.pid";
	session-keyfile "/run/named/session.key";
};
logging {
    channel defaults {
        file "/srv/logs/named/default.log";
        severity dynamic;
        print-time yes;
        print-category yes;
        print-severity yes;
    };
    channel securitys {
        file "/srv/logs/named/securitys.log";
        severity dynamic;
        print-time yes;
        print-category yes;
        print-severity yes;
    };
    channel gsquery {
        file "/srv/logs/named/query.log"   versions 3 size 5m;
        severity error;
        print-time yes;
        print-category yes;
        print-severity yes;
    };
    category queries { gsquery; };
    category security { securitys; };
    category default { defaults; };
    category general { defaults; };
};
zone "." IN {
	type hint;
	file "named.ca";
};
include "/etc/named.ntp.zones";
include "/etc/named.tophc.zones";
include "/etc/named.rfc1912.zones";
include "/etc/named.root.key";

$ORIGIN tophc.top.
$TTL 120
@		IN SOA ns1.tophc.top. 1@3.com. (
			2019052810 ; serial
			21600 ; refresh
			3600 ; retry
			604800 ; expiry
			120 ; minimum ttl
		)
; Nameservers
tophc.top.	86400 IN NS  ns1.tophc.top.
tophc.top.      86400 IN TXT "v=spf1 include:tophc.top -all"
; Mailservers
tophc.top.	86400 IN MX  10  mail.xxxx.xxxx.
mail            120   IN A   xxxx
; Reverse DNS Records (PTR)
; CNAME
smtp    120 IN CNAME mail
imap    120 IN CNAME mail
pop3    120 IN CNAME mail
; DNS RECORDS
ns1	120 IN A xxxx
; HOST RECORDS
ftp	120 IN A xxxx