Postfix邮件服务 - DNS配置
DNS 域名系统服务器
IP 与 域名之间解析 ;提供分层的域名解析 服务;
bing 伯克利加州大学 应用最广的域名服务系统;
bind 主要分为 主配置文件 和 域数据记录文件
yum 安装:
yum install bind* -y
配置NDS 域名解析
直接添加一下内容:
[root@mail ~]# cat /etc/named.conf zone "wangxiaojing.com" IN { type master; file "wangxiaojing.com.zone"; allow-update{none;}; }; zone "11.168.192.in-addr.arpa" IN { type master; file "11.168.192.local"; allow-update{none;}; };
正向解析 配置
[root@mail ~]# cat /var/named/wangxiaojing.com.zone
$TTL 1D @ IN SOA @ dns.wangxiaojing.com. ( 0 ; serial 1D ; refresh 1H ; retry 1W ; expire 3H ) ; minimum NS @ A 127.0.0.1 AAAA ::1 IN NS dns.wangxiaojing.com. IN MX 10 dns.wangxiaojing.com. dns IN A 172.16.2.18 mail IN CNAME dns pop3 IN CNAME dns smtp IN CNAME dns imap4 IN CNAME dns
配置反向解析
[root@mail ~]# cat /var/named/11.168.192.local $TTL 1D @ IN SOA @ dns.wangxiaojing.com. ( 0 ; serial 1D ; refresh 1H ; retry 1W ; expire 3H ) ; minimum NS @ A 127.0.0.1 AAAA ::1 IN NS dns.wangxiaojing.com. 18 IN PTR dns.wangxiaojing.com.
设置开机自启动
chkconfig named on
service named start
配置 /etc/resolv.conf
(重启之后配置会失效)
cat /etc/resolv.conf
search wangxiaojing.com nameserver 172.16.2.18 nameserver 8.8.8.8 nameserver 8.8.4.4
检测 NDS 解析:
[root@mail ~]# nslookup -qt=mx mail.wangxiaojing.com
*** Invalid option: qt=mx Server: 172.16.2.18 Address: 172.16.2.18#53 mail.wangxiaojing.com canonical name = dns.wangxiaojing.com. Name: dns.wangxiaojing.com Address: 172.16.2.18