DNS反向解析的设定

(以203.73.24.X网段为例)编辑/etc/named.conf，增加:

zone "24.73.203.in-addr.arpa" IN {

        type master;
        file "203.73.24.zone";
        allow-update { none; };
};

然后到/var/named/chroot/var/named，新增203.73.24.zone文件:

$TTL    86400
@       IN      SOA     mailmygo.com. root.mailmygo.com.  (
                                      2011083016 ; Serial
                                      28800      ; Refresh
                                      14400      ; Retry
                                      3600000    ; Expire
                                      86400 )    ; Minimum
        IN      NS      mailmygo.com.
91      IN      PTR     mailmygo.com.
90      IN      PTR     mygo.com.
76      IN      PTR     mygo.com.

这样就是设定了 203.73.24.91->mailmygo.com和203.73.24.76(203.73.24.90)->mygo.com的反向解析