nslookupの使い方
nslookup so-net.ne.jp
Server: UnKnown? Address: 192.168.10.1 <-デフォルトのDNSサーバ
Non-authoritative answer: Name: so-net.ne.jp Address: 202.238.95.65
mxレコード(メールサーバの宛先)を指定
> nslookup -type=mx so-net.ne.jp *** Can't find server name for address 192.168.10.1: Non-existent domain *** Default servers are not available Server: UnKnown Address: 192.168.10.1 <-デフォルトのDNSサーバ Non-authoritative answer: so-net.ne.jp MX preference = 100, mail exchanger = mxin2.so-net.ne.jp so-net.ne.jp MX preference = 100, mail exchanger = mxin1.so-net.ne.jp so-net.ne.jp nameserver = dnss3.so-net.ne.jp so-net.ne.jp nameserver = dnss6.so-net.ne.jp so-net.ne.jp nameserver = dnss7.so-net.ne.jp mxin1.so-net.ne.jp internet address = 202.238.84.141 mxin2.so-net.ne.jp internet address = 202.238.84.142
> nslookup -type=mx so-net.ne.jp 202.238.95.24 Server: dnss1.so-net.ne.jp Address: 202.238.95.24 Non-authoritative answer: so-net.ne.jp MX preference = 100, mail exchanger = mxin1.so-net.ne.jp so-net.ne.jp MX preference = 100, mail exchanger = mxin2.so-net.ne.jp so-net.ne.jp nameserver = dnss7.so-net.ne.jp so-net.ne.jp nameserver = dnss3.so-net.ne.jp so-net.ne.jp nameserver = dnss6.so-net.ne.jp mxin1.so-net.ne.jp internet address = 202.238.84.141 mxin2.so-net.ne.jp internet address = 202.238.84.142 dnss3.so-net.ne.jp internet address = 210.132.247.56 dnss6.so-net.ne.jp internet address = 210.132.247.53 dnss7.so-net.ne.jp internet address = 210.132.247.54
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