smtp协议
........\Main.cpp
........\RESOURCE.H
........\Smtp.cpp
........\SMTP.GIF
........\Smtp.h
........\SMTP.HTM
........\smtpconnection.001
........\smtpconnection.dsp
........\smtpconnection.dsw
........\smtpconnection.ncb
........\smtpconnection.opt
........\smtpconnection.plg
........\StdAfx.cpp
........\StdAfx.h