我有一个使用 Virtualmin/Webmin 的网络服务器（带有 LAMP 的 Ubuntu 12.04）。因为我刚从 Cpanel 系统迁移过来，所以我在配置 DNS 时遇到了噩梦！
使用 intoDNS.com，失败的报告是：
Mismatched NS records WARNING: One or more of your nameservers did not return any of your NS records.
DNS servers responded ERROR: One or more of your nameservers did not respond: The ones that did not respond are: 123.123.123.123 213.251.188.141x
Multiple Nameservers ERROR: Looks like you have less than 2 nameservers. According to RFC2182 section 5 you must have at least 3 nameservers, and no more than 7. Having 2 nameservers is also ok by me.
Missing nameservers
reported by your nameserver You should already know that your NS records at your nameservers are missing, so here it is again:
ns1.mydomain.com. sdns2.ovh.net.
SOA record No valid SOA record came back!
MX Records
WWW A Record ERROR: I could not get any A records for www.mydomain.com!
我的逐步尝试
在我的域名注册商 (Namecheap) 中，我注册ns1.mydomain.com为域名服务器，指向我正在运行的网络服务器的 IP 地址bind9。该域使用 DNSns1.mydomain.com和sdns2.ovh.net. sdns2.ovh.net是辅助 DNS 服务器（SLAVE 并指向mydomain.com我的 Web 服务器的 IP 地址）
网络服务器域：mydomain.com
网络服务器主机名：ns4000000.ip-123-123-123.net
网络服务器 IP :123.123.123.123
在 Virtualmin 下，我编辑了默认的虚拟服务器模板，
- 绑定新域的 DNS 记录：
ns1.mydomain.com - 主 DNS 服务器主机名：
ns1.mydomain.com
接下来，我使用该服务器模板创建了一个虚拟服务器。
这就是我所做的，但它仍然无法正常工作！有任何想法吗？我被困了好几天了，谢谢大家的帮助！
服务绑定9状态
* bind9 is running
lsof -i :53
COMMAND PID USER FD TYPE DEVICE SIZE/OFF NODE NAME
named 6966 bind 20u IPv6 338583 0t0 TCP *:domain (LISTEN)
named 6966 bind 21u IPv4 338588 0t0 TCP localhost.localdomain:domain (LISTEN)
named 6966 bind 22u IPv4 338590 0t0 TCP ns4000000.ip-123-123-123.net:domain (LISTEN)
named 6966 bind 512u IPv6 338582 0t0 UDP *:domain
named 6966 bind 513u IPv4 338587 0t0 UDP localhost.localdomain:domain
named 6966 bind 514u IPv4 338589 0t0 UDP ns4000000.ip-123-123-123.net:domain
/etc/resolv.con
（不知道怎么213.186.33.99来的）
nameserver 127.0.0.1
nameserver 213.186.33.99
search ovh.net
主机 123.123.123.123 （我的网络服务器的 IP）
13.60.245.198.in-addr.arpa domain name pointer ns4000000.ip-123-123-123.net.
nslookup 213.186.33.99
Server: 127.0.0.1
Address: 127.0.0.1#53
Non-authoritative answer:
99.33.186.213.in-addr.arpa name = cdns.ovh.net.
Authoritative answers can be found from:
33.186.213.in-addr.arpa nameserver = ns.ovh.net.
33.186.213.in-addr.arpa nameserver = dns.ovh.net.
nslookup ns1.mydomain.com
;; Got SERVFAIL reply from 127.0.0.1, trying next server
;; connection timed out; no servers could be reached
nslookup ns2.mydomain.com
;; Got SERVFAIL reply from 127.0.0.1, trying next server
;; connection timed out; no servers could be reached
nslookup www.mydomain.com
;; Got SERVFAIL reply from 127.0.0.1, trying next server
;; connection timed out; no servers could be reached
挖 mydomain.com
; <<>> DiG 9.8.1-P1 <<>> mydomain.com
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: SERVFAIL, id: 43540
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 0, ADDITIONAL: 0
;; QUESTION SECTION:
;mydomain.com. IN A
;; Query time: 0 msec
;; SERVER: 127.0.0.1#53(127.0.0.1)
;; WHEN: Thu Oct 11 11:30:09 2012
;; MSG SIZE rcvd: 30
挖 ns1.mydomain.com
; <<>> DiG 9.8.1-P1 <<>> ns1.mydomain.com
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: SERVFAIL, id: 31254
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 0, ADDITIONAL: 0
;; QUESTION SECTION:
;ns1.mydomain.com. IN A
;; Query time: 0 msec
;; SERVER: 127.0.0.1#53(127.0.0.1)
;; WHEN: Thu Oct 11 11:30:16 2012
;; MSG SIZE rcvd: 34
/etc/bind/named.conf
include "/etc/bind/named.conf.options";
include "/etc/bind/named.conf.local";
include "/etc/bind/named.conf.default-zones";
/etc/bind/named.conf.default-zones
zone "." {
type hint;
file "/etc/bind/db.root";
};
zone "localhost" {
type master;
file "/etc/bind/db.local";
};
zone "127.in-addr.arpa" {
type master;
file "/etc/bind/db.127";
};
zone "0.in-addr.arpa" {
type master;
file "/etc/bind/db.0";
};
zone "255.in-addr.arpa" {
type master;
file "/etc/bind/db.255";
};
/etc/bind/named.conf.local
zone "mydomain.com" {
type master;
file "/var/lib/bind/mydomain.com.hosts";
allow-transfer {
127.0.0.1;
localnets;
};
};
/etc/bind/named.conf.options
options {
directory "/var/cache/bind";
dnssec-validation auto;
auth-nxdomain no; # conform to RFC1035
listen-on-v6 { any; };
// allow-recursion { 127.0.0.1; };
// transfer-source;
};
命名-checkconf -z
zone mydomain.com/IN: loaded serial 1349965194
zone localhost/IN: loaded serial 2
zone 127.in-addr.arpa/IN: loaded serial 1
zone 0.in-addr.arpa/IN: loaded serial 1
zone 255.in-addr.arpa/IN: loaded serial 1
iptables -L
Chain INPUT (policy ACCEPT)
target prot opt source destination
ACCEPT udp -- anywhere anywhere udp dpt:domain
ACCEPT tcp -- anywhere anywhere tcp dpt:20000
ACCEPT tcp -- anywhere anywhere tcp dpt:webmin
ACCEPT tcp -- anywhere anywhere tcp dpt:https
ACCEPT tcp -- anywhere anywhere tcp dpt:http
ACCEPT tcp -- anywhere anywhere tcp dpt:imaps
ACCEPT tcp -- anywhere anywhere tcp dpt:imap2
ACCEPT tcp -- anywhere anywhere tcp dpt:pop3s
ACCEPT tcp -- anywhere anywhere tcp dpt:pop3
ACCEPT tcp -- anywhere anywhere tcp dpt:ftp-data
ACCEPT tcp -- anywhere anywhere tcp dpt:ftp
ACCEPT tcp -- anywhere anywhere tcp dpt:domain
ACCEPT tcp -- anywhere anywhere tcp dpt:submission
ACCEPT tcp -- anywhere anywhere tcp dpt:smtp
ACCEPT tcp -- anywhere anywhere tcp dpt:ssh
ACCEPT all -- anywhere anywhere
Chain FORWARD (policy ACCEPT)
target prot opt source destination
Chain OUTPUT (policy ACCEPT)
target prot opt source destination
您的输出
named-checkconf -z表明 中存在语法错误/var/lib/bind/mydomain.com.hosts，这是您实际没有发布的唯一文件。检查文件并修复其中的任何错误。要调试服务器问题，请始终在服务重启后检查日志：
>
或者
ctrl+C 中止
或者只显示 syslog 的最后 20 条记录