怎么用nslookup通过给定的域名服务器找到yahoo的邮件服务器地址

C:\WINDOWS\system32>nslookup
Default Server: google-public-dns-agooglecom
Address: 8888
> set q=mx
> yahoocomcn
Server: google-public-dns-agooglecom
Address: 8888
Non-authoritative answer:
yahoocomcn MX preference = 10, mail exchanger = mx1mailcnbyahoocom
> set q=a
> mx1mailcnbyahoocom
Server: google-public-dns-agooglecom
Address: 8888
Non-authoritative answer:
Name: mx1mailcnbyahoocom
Address: 203209228250
>

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