求助
我在dos界面下运行nslookup查询出新浪的mx记录如下：<br>Non-authoritative answer:<br>
sina.com.cn MX preference = 10, mail exchanger = sinamx.sina.com.cn<br>
<br>
sina.com.cn nameserver = ns1.sina.com.cn<br>
sina.com.cn nameserver = ns2.sina.com.cn<br>
sina.com.cn nameserver = ns3.sina.com.cn<br>
sinamx.sina.com.cn internet address = 202.108.3.187<br>
sinamx.sina.com.cn internet address = 202.108.3.188<br>
sinamx.sina.com.cn internet address = 202.108.3.186<br>
ns1.sina.com.cn internet address = 202.106.184.166<br>
ns3.sina.com.cn internet address = 202.108.44.55<br>
请问这些都是代表什么意思，谢谢
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