高效的Esmtp,带验证，用Socket编写

private string priority;

static string Send_Method;

public mSendMail()

{

}

public mSendMail(string strToName,string strTo,string strBody)

{

to = strTo;

recipientName = strToName;

body = strBody;

smtpCodeAdd();

}

public mSendMail(string strToName,string strTo, string strSubject, string strBody)

{

to = strTo;

recipientName = strToName;

subject = strSubject;

body = strBody;

smtpCodeAdd();

}

public mSendMail(string strToName,string strTo,string strFromName,string strFrom, string strSubject, string strBody)

{

to = strTo;

recipientName = strToName;

from = strFrom;

fromName = strFromName;

subject = strSubject;

body = strBody;

smtpCodeAdd();

}

private bool initialize()