基本に戻り、nslookupの使い方。
digに慣れていると、とてもスッキリしたnslookupの機能を忘れてしまうので覚え書。
方法1:
nslookup domain.com
方法2:
nslookup[enter]
>server ns1.domain.com でサーバを指定
>set type=mx で問合せタイプを指定
>domain.com で問合せ実行。
実験:google.com
———————
sh-3.2# nslookup google.com
Server: 202.216.224.30
Address: 202.216.224.30#53
Non-authoritative answer:
Name: google.com
Address: 66.249.89.104
Name: google.com
Address: 66.249.89.99
sh-3.2#
sh-3.2# nslookup
> set type=mx
> google.com
Server: 202.216.224.30
Address: 202.216.224.30#53
Non-authoritative answer:
google.com mail exchanger = 200 google.com.s9a2.psmtp.com.
google.com mail exchanger = 400 google.com.s9b2.psmtp.com.
google.com mail exchanger = 300 google.com.s9b1.psmtp.com.
google.com mail exchanger = 100 google.com.s9a1.psmtp.com.
Authoritative answers can be found from:
google.com nameserver = ns1.google.com.
google.com nameserver = ns3.google.com.
google.com nameserver = ns4.google.com.
google.com nameserver = ns2.google.com.
google.com.s9a1.psmtp.com internet address = 74.125.148.10
google.com.s9a2.psmtp.com internet address = 74.125.148.11
google.com.s9b2.psmtp.com internet address = 74.125.148.14
google.com.s9b1.psmtp.com internet address = 74.125.148.13
ns4.google.com internet address = 216.239.38.10
ns3.google.com internet address = 216.239.36.10
ns2.google.com internet address = 216.239.34.10
ns1.google.com internet address = 216.239.32.10
> exit
sh-3.2#
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