smtp

S:  TCP connect
R:  220  xxx Mail Server SMTP ready

S:  EHLO
R: 250

S:  AUTH (cipher password)
R: 235 go ahead

S: MAIL FROM:<[email protected]>
R: 250 OK

S: RCPT TO:<[email protected]>
R: 250 OK

S: DATA
R: 354 Start mail input; end with <CRLF>.<CRLF>

S: Date: 05 Mar 2012 13:10:43 +0800
     From:  [email protected]
     To:  [email protected]
     Subject:  Test Email
     <CRLF>.<CRLF>
     ....
R: 250 OK

S: .(end)
R: 250

S: QUIT
R: 221