高效的Esmtp,带验证，用Socket编写

{Send_Method="1";}

else{Send_Method="0";}

mSendMail mySendMail = new mSendMail(ToName,MailAddress[i],FromName,From,Subject,strTemplate);

try

{

if (mySendMail.sendMail()== true)

IsSuccess = 0;

}

catch

{

}

}

}

else

{

if (s1.Substring(ix+1)=="sina.com")

{Send_Method="1";}

else{Send_Method="0";}

mSendMail mySendMail = new mSendMail(ToName,To,FromName,From,Subject,strTemplate);

try

{

if (mySendMail.sendMail()== true)

IsSuccess = 0;

}

catch

{}

}

}

else{IsSuccess=2;}

return IsSuccess;

}

}

}