nslookupでmx設定を確認するには。set type=mxしてからドメインを打つ。
$nslookup
C:\Users\Administrator>nslookup
既定のサーバー: UnKnown
Address: 10.211.55.1
$nslookup
> set type=mx
> tnt-net.co.jp
サーバー: UnKnown
Address: 10.211.55.1
tnt-net.co.jp MX preference = 10, mail exchanger = mail2.tnt-net.co.jp
tnt-net.co.jp MX preference = 20, mail exchanger = mail.tnt-net.co.jp
tnt-net.co.jp nameserver = dns.tnt-net.co.jp
tnt-net.co.jp nameserver = kiwi05.mitaka.ne.jp
mail2.tnt-net.co.jp internet address = 61.114.177.87
mail.tnt-net.co.jp internet address = 61.114.177.79
dns.tnt-net.co.jp internet address = 61.114.177.87
kiwi05.mitaka.ne.jp internet address = 210.135.203.2
>
