Telnet

telnet spool.domain.com.tw 25
Trying 210.59.230.22...
Connected to spool.domain.com.tw.
Escape character is '^]'.
220 ms5.epaper.com.tw ESMTP Postfix
helo portaldev.domain.com.tw
250 ms5.epaper.com.tw mail from: portaldev@msx.domain.com.tw
250 2.1.0 Ok
rcpt to: xxx@staff.domain.com.tw
250 2.1.5 Ok
data
354 End data with .
dajiosdjfiopasdf
asjdiofasjdpfas
.
250 2.0.0 Ok: queued as CBE5C193B
quit
221 2.0.0 Bye
Connection closed by foreign host.