takawata%nslookup
Default Server:  ns.kobe-u.ac.jp
Address:  133.30.8.2

> set q=MX
> npa.go.jp
Server:  ns.kobe-u.ac.jp
Address:  133.30.8.2

npa.go.jp       preference = 10, mail exchanger = npem.npa.go.jp
npa.go.jp       preference = 1000, mail exchanger = meshsv01.tk.mesh.ad.jp
npa.go.jp       preference = 2000, mail exchanger = meshsv61.os.mesh.ad.jp
npa.go.jp       nameserver = okfm.npa.go.jp
npa.go.jp       nameserver = ns1.mesh.ad.jp
npem.npa.go.jp  internet address = 203.136.113.52
meshsv01.tk.mesh.ad.jp  internet address = 133.205.16.129
meshsv61.os.mesh.ad.jp  internet address = 133.205.64.129
okfm.npa.go.jp  internet address = 203.136.113.50
ns1.mesh.ad.jp  internet address = 133.205.64.129
> takawata%nslookup
takawata%telnet npem.npa.go.jp 25
Trying 203.136.113.52...
Connected to npem.npa.go.jp.
Escape character is '^]'.
220 npem.npa.go.jp ESMTP Sendmail 8.8.8+2.7Wbeta7/3.6W; Sun, 11 Jul 1999 01:51:57 +0900 (JST)
EHLO foo              
250-npem.npa.go.jp Hello [202.219.141.203], pleased to meet you
250-EXPN
250-VERB
250-8BITMIME
250-SIZE 10000000
250-DSN
250-ONEX
250-ETRN
250-XUSR
250 HELP
EXPN police
550 police... User unknown
QUIT
221 npem.npa.go.jp closing connection
Connection closed by foreign host.
takawata%cat session