C:>nslookup
Default Server: ns.homeway.com.cn
Address: 202.99.16.1
set type=mx
> xanf.com.cn
Server: ns.homeway.com.cn
Address: 202.99.16.1
DNS request timed out.
timeout was 2 seconds.
Non-authoritative answer:
xanf.com.cn MX preference = 10, mail exchanger = xanf.com.cn-----------MX记录！
xanf.com.cn nameserver = www2.xaonline.com
xanf.com.cn nameserver = ns1.xaonline.com------------------------------解析服务器（不是我们的DNS服务器，所以我们无法解析）
www2.xaonline.com internet address = 202.100.4.14
ns1.xaonline.com internet address = 202.100.4.15
由于客户是61.135.147.114上的用户，所以，MX记录应该是61.135.147.114
mail exchanger = xanf.com.cn----是客户做的MX记录
但是 ping xanf.com.cn
** Can't find address for server xanf.com.cn: Non-authoritative answer
不是61.135.147.114
以下是CE邮箱的MX记录！参考一下
> nslookup
Server: ns.homeway.com.cn
Address: 202.99.16.1
DNS request timed out.
timeout was 2 seconds.
*** Request to ns.homeway.com.cn timed-out
> set type=mx
> ce.net.cn
Server: ns.homeway.com.cn
Address: 202.99.16.1
ce.net.cn MX preference = 10, mail exchanger = mail.ce.net.cn
ce.net.cn nameserver = ns1.ce.net.cn
mail.ce.net.cn internet address = 61.135.147.118
ns1.ce.net.cn internet address = 61.135.139.111