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mx记录理解 不指定

root , 2008/05/22 21:42 , DNS , 评论(2) , 阅读(18091) , Via 本站原创
DNS中MX记录设置
引用

*********************************************************************************
xxx.com. IN MX 10 mx01.xxx.com.
xxx.com. IN MX 20 mx02.xxx.com.
xxx.com. IN TXT "v=spf1 ip4:61.211.120.156 a:xxx.com mx:xxx.com -all"
mx01.xxx.com. IN A 61.211.120.156
mx02.xxx.com. IN A 61.211.120.157
sysmail.xxx.com. IN MX 10 mx03.xxx.com
mx03.xxx.com. IN A 61.211.120.158
sysmail.xxx.com. IN TXT "v=spf1 ip4:61.211.120.158 a:sysmail.xxx.com mx:sysmail.xxx.com -all"
*********************************************************************************


详细说明
如果发邮件到leo.man@xxx.com,dns首先查询MX记录,(xxx.com. IN MX 10 mx01.xxx.com.)
再通过mx01.xxx.com.查询到A记录(mx01.xxx.com. IN A 61.211.120.156)
然后通过SMTP协议发送邮件到61.211.120.156
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用bind-9.2.4配制内网DNS服务器[原创] 不指定

root , 2008/05/22 21:01 , DNS , 评论(1) , 阅读(12527) , Via 本站原创
一、安装
yum -y install bind
yum -y install bind-chroot

二、生成key
/usr/sbin/dnssec-keygen -a hmac-md5 -b 128 -n user rndc
cat Krndc.+157+13538.*
将生成串更新/etc/rndc.key中secret的值。

三、配制
#/var/named/chroot/etc/named.conf
引用

// Default named.conf generated by install of bind-9.2.4-28.el4
options {
    directory "/var/named";
    pid-file "/var/run/named/named.pid";
    dump-file "/var/named/data/cache_dump.db";
    statistics-file "/var/named/data/named_stats.txt";
    Allow-transfer {tran;};
};

acl tran {192.168.0.174;};

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

zone "0.0.127.in-addr.arpa" IN {
    type master;
    file "named.local";
    allow-update { none; };
};

zone"hk.hn"{
    type master;
    file "hk.hn";
    allow-transfer {192.168.100.174;};
};

include "/etc/rndc.key";

#cd /etc
#ln -s /var/named/chroot/etc/named.conf named.conf

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