发布源码：高效的Esmtp,带验证，用Socket编写

核心提示：using System;using System.Net;using System.Net.Sockets;using System.Collections;using System.Configuration;using System.Text;using System.xml;using System.IO;us

using System;
using System.Net;
using System.Net.Sockets;
using System.Collections;
using System.Configuration;
using System.Text;
using System.xml;
using System.IO;
using System.Web;
using System.Web.Mail;namespace mail
{
 /// <summary>
 /// Class1 的摘要说明。
 /// </summary>
 public class mSendMail
 {
　PRivate TcpClient tcpClt;
　private NetworkStream networkStm;
　private Hashtable rightCodeHT = new Hashtable();
　private string smtpServerName;
　private int smtpServerPort;
　private string userName;
　private string passWord;
　private string to;
　private string from;
　private string fromName;
　private string charset;
　private string recipientName;
　private string subject;
　private string body;
　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()
　{
　 try
　 {
　　if(Send_Method=="1")
　　{
　　 smtpServerName = ConfigurationSettings.AppSettings["smtpServerName"];
　　 smtpServerPort = Convert.ToInt32(ConfigurationSettings.AppSettings["smtpServerPort"]);
　　 userName = ConfigurationSettings.AppSettings["userName"];
　　 password = ConfigurationSettings.AppSettings["password"];
　　 //from = ConfigurationSettings.AppSettings["from"];
　　 //fromName = ConfigurationSettings.AppSettings["fromName"];
　　 charset = ConfigurationSettings.AppSettings["charset"];
　　}
　　else
　　{
　　 smtpServerName ="";//your smtp server
　　 smtpServerPort =25;
　　 userName ="";//your name
　　 password ="";//your pass
　　 charset ="GB2312";
　　 //from = ConfigurationSettings.AppSettings["from"];
　　 //fromName = ConfigurationSettings.AppSettings["fromName"];
　　}
　　
　　
　 }
　 catch
　 {
　　return false;
　 }
　 priority = "Normal";
　 //subject = "//";
　 //smtpCodeAdd();
　 return true;
　}　private string Base64Encode(string str)
　{
　 byte[] barray;
　 barray=Encoding.Default.GetBytes(str);
　 return Convert.ToBase64String(barray);
　}　private void smtpCodeAdd()
　{
　 rightCodeHT.Add("220","");
　 rightCodeHT.Add("250","");
　 rightCodeHT.Add("251","");
　 rightCodeHT.Add("354","");
　 rightCodeHT.Add("221","");
　 rightCodeHT.Add("334","");
　 rightCodeHT.Add("235","");
　}　private bool sendCommand(string str)
　{
　 byte[] writeBuffer;
　 writeBuffer = Encoding.Default.GetBytes(str);
　 try
　 {
　　networkStm.Write(writeBuffer, 0, writeBuffer.Length);
　 }
　 catch
　 {
　　return false;
　 }
　 return true;
　}　private bool isRight()
　{
　 int streamSize;
　 byte[] readBuffer = new byte[1024];
　 string returnValue = "";
　 try
　 {
　　streamSize = networkStm.Read(readBuffer, 0, readBuffer.Length);
　 }
　 catch
　 {
　　return false;
　 }
　 if (streamSize != 0)
　　returnValue = Encoding.Default.GetString(readBuffer, 0, streamSize);
　 if(rightCodeHT[returnValue.Substring(0,3)] == null)
　　return false;
　 return true;
　}　public bool sendMail()
　{
　 if (!initialize())
　　return false;
　 try
　 {
　　tcpClt = new TcpClient(smtpServerName, smtpServerPort);
　 }
　 catch
　 {
　　return false;
　 }
　 networkStm = tcpClt.GetStream();
　 if (!isRight())
　　return false;
　 string[] sendBuffer;
　 string enter = "\r\n";　 sendBuffer = new String[9];
　 sendBuffer[0] = "EHLO " + smtpServerName + enter;
　 sendBuffer[1] = "AUTH LOGIN" + enter;
　 sendBuffer[2] = Base64Encode(userName) + enter;
　 sendBuffer[3] = Base64Encode(password) + enter;
　 sendBuffer[4] = "MAIL FROM:<" + from + ">" + enter;
　 sendBuffer[5] = "RCPT TO:<" + to +">" + enter;
　 sendBuffer[6] = "DATA" + enter;
　 sendBuffer[7] = "From:" + fromName + "<" + from +">" + enter;
　 sendBuffer[7] += "To:=?" + charset.ToUpper() + "?B?"
　　+ Base64Encode(recipientName) + "?=" + "<" + to + ">" + enter;
　 sendBuffer[7] += "Subject:" + "=?" + charset.ToUpper() + "?B?"
　　+ Base64Encode(subject) + "?=" + enter;
　 sendBuffer[7] += "X-Priority:" + priority + enter;
　 sendBuffer[7] += "X-MSMail-Priority:" + priority + enter;
　 sendBuffer[7] += "Importance:" + priority + enter;
　 sendBuffer[7] += "X-Mailer: Huolx.Pubclass" + enter;
　 sendBuffer[7] += "MIME-Version: 1.0" + enter;
　 sendBuffer[7] += "Content-Type: multipart/mixed;" + enter;
　 sendBuffer[7] += "　 boundary=\"----=_NextPart_000_00D6_01C29593.AAB31770\"" + enter;
　 sendBuffer[7] += "------=_NextPart_000_00D6_01C29593.AAB31770" + enter;
　 sendBuffer[7] += "Content-Type: text/Html;" + enter;
　 sendBuffer[7] += "　 charset=\"" + charset.ToLower() + "\"" + enter;
　 sendBuffer[7] += "Content-Transfer-Encoding: base64" + enter + enter;
　 sendBuffer[7] += Base64Encode(body) + enter;
　 sendBuffer[7] += "------=_NextPart_000_00D6_01C29593.AAB31770--" + enter + enter;
　 sendBuffer[7] += enter + "." + enter;
　 sendBuffer[8] = "QUIT" + enter;　 int i;　 for (i=0;i<sendBuffer.Length;i++)
　 {
　　if (!sendCommand(sendBuffer[i]))
　　 return false;
　　if (!isRight())
　　 return false;
　 }
　 tcpClt.Close();
　 networkStm.Close();　 return true;
　}
　public int Send_Email(string From, string To,string FromName,string ToName,string Subject,string Body)
　{
　　  int IsSUCcess = 0;
　 string s1=To;
　 int ix;
　 int iy;
　 int iz;
　 char split;
　 split=',';
　 string[] MailAddress;
　 
　 ix=To.LastIndexOf("@");
　 iy=To.LastIndexOf(".");
　 iz=To.LastIndexOf(",");　 if (ix>0 && iy>0 && iy>ix)
　 {
　　if (iz>0)
　　{　
　　 MailAddress=s1.Split(split);
　　 for(int i=0;i<MailAddress.Length;i++)
　　 {
　　　ix=MailAddress[i].LastIndexOf("@");
　　　if (MailAddress[i].Substring(ix+1)=="sina.com")
　　　{Send_Method="1";}
　　　else{Send_Method="0";}
　　　　　
　　　mSendMail mySendMail = new mSendMail(ToName,MailAddress[i],FromName,From,Subject,Body);
　　　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,Body);
　　 try
　　 {
　　　if (mySendMail.sendMail()== true)
　　　 IsSuccess = 0;
　　 }
　　 catch
　　 {}
　　 
　　}
　 }
　 else{IsSuccess=2;}
　 return IsSuccess;
　}
　public int Send_TuiJian(string From, string To,string FromName,string ToName,string Title,string NewsAddr,string Message)
　{
　 //读取邮件内容
　 string MessagePath;
　 if(System.Configuration.ConfigurationSettings.AppSettings["MessagePath"] != null)
　　MessagePath = System.Configuration.ConfigurationSettings.AppSettings["MessagePath"].ToString();
　 else
　　MessagePath = @"D:\abc.htm";
　 string strTemplate;
　 
　 StreamReader  stream = new StreamReader(MessagePath,System.Text.Encoding.GetEncoding("GB2312"));　　　
　 try
　 {
　　
　　stream.BaseStream.Seek(0,SeekOrigin.Begin);
　　strTemplate = stream.ReadToEnd();
　　strTemplate.Replace("\"","'");
　 }
　 finally
　 {
　　stream.Close();
　 }　 //替换
　 string tmpMessage = Message;
　 try
　 {
　　for (int i=0; i<=(Message.Length/35); i++)
　　{
　　 tmpMessage = tmpMessage.Insert((i+1)*35,"<br>");
　　}
　 }
　 catch
　 {
　 }
　 Message = tmpMessage;
　 Message = Message + "<br>";
　 strTemplate = strTemplate.Insert(strTemplate.LastIndexOf("此致，礼"),Message);
　 strTemplate = strTemplate.Replace("aa",ToName);
　 strTemplate = strTemplate.Replace("bb",FromName);
　 strTemplate = strTemplate.Replace("cc",Title);
　 strTemplate = strTemplate.Replace(@"dd",NewsAddr);
　 strTemplate = strTemplate.Replace("1980年",DateTime.Now.ToShortDateString());　 //发送邮件
　 int IsSuccess = 0;
　 string Subject = "想请你去看看";
　 
　 //邮件地址判定
　 string s1=To;
　 int ix;
　 int iy;
　 int iz;
　 char split;
　 split=',';
　 string[] MailAddress;
　 
　 ix=To.LastIndexOf("@");
　 iy=To.LastIndexOf(".");
　 iz=To.LastIndexOf(",");
　 if (ix>0 && iy>0 && iy>ix)
　 {
　　if (iz>0)
　　{　
　　 MailAddress=s1.Split(split);
　　 for(int i=0;i<MailAddress.Length;i++)
　　 {
　　　ix=MailAddress[i].LastIndexOf("@");
　　　if (MailAddress[i].Substring(ix+1)=="sina.com")
　　　{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;　}
 }}