一个域名怎么能绑好几个IP？

unixkumao

情况：
我对 mail.126.com 做 mx 的查看，结果如下

# nslookup -q=mx 126.com

Server:         211.99.25.1
Address:        211.99.25.1#53

Non-authoritative answer:
126.com mail exchanger = 50 126.mxmail.netease.com.

Authoritative answers can be found from:
126.com nameserver = ns3.nease.net.
126.com nameserver = ns4.nease.net.
126.mxmail.netease.com  internet address = 220.181.15.199
126.mxmail.netease.com  internet address = 220.181.15.200
126.mxmail.netease.com  internet address = 220.181.15.131
126.mxmail.netease.com  internet address = 220.181.15.132
126.mxmail.netease.com  internet address = 220.181.15.134
126.mxmail.netease.com  internet address = 220.181.15.135
126.mxmail.netease.com  internet address = 220.181.15.136
126.mxmail.netease.com  internet address = 220.181.15.137
126.mxmail.netease.com  internet address = 220.181.15.139
126.mxmail.netease.com  internet address = 220.181.15.140
126.mxmail.netease.com  internet address = 220.181.15.191
126.mxmail.netease.com  internet address = 220.181.15.192
126.mxmail.netease.com  internet address = 220.181.15.193
126.mxmail.netease.com  internet address = 220.181.15.194
126.mxmail.netease.com  internet address = 220.181.15.195
126.mxmail.netease.com  internet address = 220.181.15.196
126.mxmail.netease.com  internet address = 220.181.15.197
126.mxmail.netease.com  internet address = 220.181.15.198
ns3.nease.net   internet address = 220.181.28.3
ns4.nease.net   internet address = 61.135.255.138

问题：
同一个 126.mxmail.netease.com ，怎么可以指向这么多IP？

谢谢！

xmbbx

mx记录当然可以有很多个。
阅读下精华文章，你可以了解很多
http://bbs.chinaunix.net/viewthread.php?tid=637627

unixkumao

LS的兄弟，你好像理解错我的意思了

MX记录可以有多个，如
126.com mail exchanger = 50 126.mxmail.netease.com.
。。。。。

但我问的不是这个，我是问
126.mxmail.netease.com  internet address = 220.181.15.199
126.mxmail.netease.com  internet address = 220.181.15.200
126.mxmail.netease.com  internet address = 220.181.15.131
126.mxmail.netease.com  internet address = 220.181.15.132
126.mxmail.netease.com  internet address = 220.181.15.134
126.mxmail.netease.com  internet address = 220.181.15.135
126.mxmail.netease.com  internet address = 220.181.15.136
126.mxmail.netease.com  internet address = 220.181.15.137
126.mxmail.netease.com  internet address = 220.181.15.139
126.mxmail.netease.com  internet address = 220.181.15.140
126.mxmail.netease.com  internet address = 220.181.15.191
126.mxmail.netease.com  internet address = 220.181.15.192
126.mxmail.netease.com  internet address = 220.181.15.193
126.mxmail.netease.com  internet address = 220.181.15.194
126.mxmail.netease.com  internet address = 220.181.15.195
126.mxmail.netease.com  internet address = 220.181.15.196
126.mxmail.netease.com  internet address = 220.181.15.197
126.mxmail.netease.com  internet address = 220.181.15.198
同一个 126.mxmail.netease.com 怎么可以指到这么多不同的IP地址的？
如何实现？

谢谢！

ncowboy

一个域名可以解析为多个IP地址啊。

unixkumao

原帖由 ncowboy 于 2009-3-6 13:45 发表
一个域名可以解析为多个IP地址啊。

不明白，兄弟有这方面的资料吗？

谢谢！

ruochen

原帖由 unixkumao 于 2009-3-6 10:06 发表
LS的兄弟，你好像理解错我的意思了

MX记录可以有多个，如
126.com mail exchanger = 50 126.mxmail.netease.com.
。。。。。

但我问的不是这个，我是问
126.mxmail.netease.com  internet address = 2 ...

去DNS板块看看

一个域名对用多个A记录就行了