Biegral Blog

using System; using System.Collections; using System.Collections.Generic; using System.Text; using System.Net; using System.Net.Sockets; using System.Net.Mail; namespace Common{ /// <summary> /// 邮件发送接口 /// </summary> public interface ISmtpMail { /// <summary> /// /// </summary> int MailDomainPort { set; } /// <summary> /// /// </summary> string From { set; get; } /// <summary> /// /// </summary> string FromName { set; get; } /// <summary> /// /// </summary> bool Html { set; get; } /// <summary> /// /// </summary> string Subject { set; get; } /// <summary> /// /// </summary> string Body { set; get; } /// <summary> /// /// </summary> string MailDomain { set; } /// <summary> /// /// </summary> string MailServerUserName { set; } /// <summary> /// /// </summary> string MailServerPassWord { set; } /// <summary> /// /// </summary> string RecipientName { set; get; } /// <summary> /// /// </summary> /// <param name="username"></param> /// <returns></returns> bool AddRecipient(params string[] username); /// <summary> /// /// </summary> /// <returns></returns> bool Send(); } /// <summary> /// 发送邮件类【邮件协议】 /// </summary> public class SmtpMail : ISmtpMail { private string enter = "/r/n"; /// <summary> /// 设定语言代码,默认设定为GB2312,如不需要可设置为"" /// </summary> private string _charset = "UTF-8"; /// <summary> /// 发件人地址 /// </summary> private string _from = ""; /// <summary> /// 发件人姓名 /// </summary> private string _fromName = ""; /// <summary> /// 收件人姓名 /// </summary> private string _recipientName = ""; /// <summary> /// 收件人列表 /// </summary> private Hashtable Recipient = new Hashtable(); /// <summary> /// 邮件服务器域名 /// </summary> private string mailserver = ""; /// <summary> /// 邮件服务器端口号 /// </summary> private int mailserverport = 25; /// <summary> /// SMTP认证时使用的用户名 /// </summary> private string username = ""; /// <summary> /// SMTP认证时使用的密码 /// </summary> private string password = ""; /// <summary> /// 是否需要SMTP验证 /// </summary> private bool ESmtp = false; /// <summary> /// 是否Html邮件 /// </summary> private bool _html = false; /// <summary> /// 邮件附件列表 /// </summary> private IList Attachments; /// <summary> /// 邮件发送优先级,可设置为"High","Normal","Low"或"1","3","5" /// </summary> private string priority = "Normal"; /// <summary> /// 邮件主题 /// </summary> private string _subject; /// <summary> /// 邮件正文 /// </summary> private string _body; /// <summary> /// 收件人数量 /// </summary> private int RecipientNum = 0; /// <summary> /// 最多收件人数量 /// </summary> private int recipientmaxnum = 5; /// <summary> /// 错误消息反馈 /// </summary> private string errmsg; /// <summary> /// TcpClient对象,用于连接服务器 /// </summary> private TcpClient tc; /// <summary> /// NetworkStream对象 /// </summary> private NetworkStream ns; /// <summary> /// 服务器交互记录 /// </summary> private string logs = ""; /// <summary> /// SMTP错误代码哈希表 /// </summary> private Hashtable ErrCodeHT = new Hashtable(); /// <summary> /// SMTP正确代码哈希表 /// </summary> private Hashtable RightCodeHT = new Hashtable(); /// <summary> /// </summary> public SmtpMail() { Attachments = new System.Collections.ArrayList(); SMTPCodeAdd(); } /// <summary> /// 邮件主题 /// </summary> public string Subject { get { return this._subject; } set { this._subject = value; } } /// <summary> /// 邮件正文 /// </summary> public string Body { get { return this._body; } set { this._body = value; } } /// <summary> /// 发件人地址 /// </summary> public string From { get { return _from; } set { this._from = value; } } /// <summary> /// 设定语言代码,默认设定为GB2312,如不需要可设置为"" /// </summary> public string Charset { get { return this._charset; } set { this._charset = value; } } /// <summary> /// 发件人姓名 /// </summary> public string FromName { get { return this._fromName; } set { this._fromName = value; } } /// <summary> /// 收件人姓名 /// </summary> public string RecipientName { get { return this._recipientName; } set { this._recipientName = value; } } /// <summary> /// 邮件服务器域名和验证信息 /// 形如："user:pass@www.server.com:25",也可省略次要信息。如"user:pass@www.server.com"或"www.server.com" /// </summary> public string MailDomain { set { string maidomain = value.Trim(); int tempint; if (maidomain != "") { tempint = maidomain.IndexOf("@"); if (tempint != -1) { string str = maidomain.Substring(0, tempint); MailServerUserName = str.Substring(0, str.IndexOf(":")); MailServerPassWord = str.Substring(str.IndexOf(":") + 1, str.Length - str.IndexOf(":") - 1); maidomain = maidomain.Substring(tempint + 1, maidomain.Length - tempint - 1); } tempint = maidomain.IndexOf(":"); if (tempint != -1) { mailserver = maidomain.Substring(0, tempint); mailserverport = System.Convert.ToInt32(maidomain.Substring(tempint + 1, maidomain.Length - tempint - 1)); } else { mailserver = maidomain; } } } } /// <summary> /// 邮件服务器端口号 /// </summary> public int MailDomainPort { set { mailserverport = value; } } /// <summary> /// SMTP认证时使用的用户名 /// </summary> public string MailServerUserName { set { if (value.Trim() != "") { username = value.Trim(); ESmtp = true; } else { username = ""; ESmtp = false; } } } /// <summary> /// SMTP认证时使用的密码 /// </summary> public string MailServerPassWord { set { password = value; } } /// <summary> /// /// </summary> /// <param name="code"></param> /// <returns></returns> public string ErrCodeHTMessage(string code) { return ErrCodeHT[code].ToString(); } /// <summary> /// 邮件发送优先级,可设置为"High","Normal","Low"或"1","3","5" /// </summary> public string Priority { set { switch (value.ToLower()) { case "high": priority = "High"; break; case "1": priority = "High"; break; case "normal": priority = "Normal"; break; case "3": priority = "Normal"; break; case "low": priority = "Low"; break; case "5": priority = "Low"; break; default: priority = "High"; break; } } } /// <summary> /// 是否Html邮件 /// </summary> public bool Html { get { return this._html; } set { this._html = value; } } /// <summary> /// 错误消息反馈 /// </summary> public string ErrorMessage { get { return errmsg; } } /// <summary> /// 服务器交互记录. /// </summary> public string Logs { get { return logs; } } /// <summary> /// 最多收件人数量 /// </summary> public int RecipientMaxNum { set { recipientmaxnum = value; } } /// <summary> /// 添加邮件附件 /// </summary> /// <param name="FilePath">附件绝对路径</param> public void AddAttachment(params string[] FilePath) { if (FilePath == null) { throw (new ArgumentNullException("FilePath")); } for (int i = 0; i < FilePath.Length; i++) { Attachments.Add(FilePath[i]); } } /// <summary> /// 添加一组收件人(不超过recipientmaxnum个),参数为字符串数组 /// </summary> /// <param name="Recipients">保存有收件人地址的字符串数组(不超过recipientmaxnum个)</param> public bool AddRecipient(params string[] Recipients) { if (Recipient == null) { Dispose(); throw (new ArgumentNullException("Recipients")); } for (int i = 0; i < Recipients.Length; i++) { string recipient = Recipients[i].Trim(); if (recipient == String.Empty) { Dispose(); throw new ArgumentNullException("Recipients[" + i + "]"); } if (recipient.IndexOf("@") == -1) { Dispose(); throw new ArgumentException("Recipients.IndexOf(/"@/")==-1", "Recipients"); } if (!AddRecipient(recipient)) { return false; } } return true; } /// <summary> /// 添加一个收件人 /// </summary> /// <param name="Recipients">收件人地址</param> private bool AddRecipient(string Recipients) { //修改等待邮件验证的用户重复发送的问题 Recipient.Clear(); RecipientNum = 0; if (RecipientNum < recipientmaxnum) { Recipient.Add(RecipientNum, Recipients); RecipientNum++; return true; } else { Dispose(); throw (new ArgumentOutOfRangeException("Recipients", "收件人过多不可多于 " + recipientmaxnum + " 个")); } } /// <summary> /// 发送邮件方法,所有参数均通过属性设置。 /// </summary> public bool Send() { if (mailserver.Trim() == "") { throw (new ArgumentNullException("Recipient", "必须指定SMTP服务器")); } return SendEmail(); } /// <summary> /// 发送邮件方法 /// </summary> /// <param name="smtpserver">smtp服务器信息,如"username:password@www.smtpserver.com:25",也可去掉部分次要信息,如"www.smtpserver.com"</param> public bool Send(string smtpserver) { MailDomain = smtpserver; return Send(); } /// <summary> /// 发送邮件方法 /// </summary> /// <param name="smtpserver">smtp服务器信息,如"username:password@www.smtpserver.com:25",也可去掉部分次要信息,如"www.smtpserver.com"</param> /// <param name="from">发件人mail地址</param> /// <param name="fromname">发件人姓名</param> /// <param name="to">收件人地址</param> /// <param name="toname">收件人姓名</param> /// <param name="html">是否HTML邮件</param> /// <param name="subject">邮件主题</param> /// <param name="body">邮件正文</param> public bool Send(string smtpserver, string from, string fromname, string to, string toname, bool html, string subject, string body) { MailDomain = smtpserver; From = from; FromName = fromname; AddRecipient(to); RecipientName = toname; Html = html; Subject = subject; Body = body; return Send(); } void Dispose() { if (ns != null) ns.Close(); if (tc != null) tc.Close(); } /// <summary> /// SMTP回应代码哈希表 /// </summary> private void SMTPCodeAdd() { ErrCodeHT.Add("500", "邮箱地址错误"); ErrCodeHT.Add("501", "参数格式错误"); ErrCodeHT.Add("502", "命令不可实现"); ErrCodeHT.Add("503", "服务器需要SMTP验证"); ErrCodeHT.Add("504", "命令参数不可实现"); ErrCodeHT.Add("421", "服务未就绪,关闭传输信道"); ErrCodeHT.Add("450", "要求的邮件操作未完成,邮箱不可用(例如,邮箱忙)"); ErrCodeHT.Add("550", "要求的邮件操作未完成,邮箱不可用(例如,邮箱未找到,或不可访问)"); ErrCodeHT.Add("451", "放弃要求的操作;处理过程中出错"); ErrCodeHT.Add("551", "用户非本地,请尝试<forward-path>"); ErrCodeHT.Add("452", "系统存储不足, 要求的操作未执行"); ErrCodeHT.Add("552", "过量的存储分配, 要求的操作未执行"); ErrCodeHT.Add("553", "邮箱名不可用, 要求的操作未执行(例如邮箱格式错误)"); ErrCodeHT.Add("432", "需要一个密码转换"); ErrCodeHT.Add("534", "认证机制过于简单"); ErrCodeHT.Add("538", "当前请求的认证机制需要加密"); ErrCodeHT.Add("454", "临时认证失败"); ErrCodeHT.Add("530", "需要认证"); RightCodeHT.Add("220", "服务就绪"); RightCodeHT.Add("250", "要求的邮件操作完成"); RightCodeHT.Add("251", "用户非本地, 将转发向<forward-path>"); RightCodeHT.Add("354", "开始邮件输入, 以<enter>.<enter>结束"); RightCodeHT.Add("221", "服务关闭传输信道"); RightCodeHT.Add("334", "服务器响应验证Base64字符串"); RightCodeHT.Add("235", "验证成功"); } /// <summary> /// 将字符串编码为Base64字符串 /// </summary> /// <param name="str">要编码的字符串</param> private string Base64Encode(string str) { byte[] barray; barray = Encoding.Default.GetBytes(str); return Convert.ToBase64String(barray); } /// <summary> /// 将Base64字符串解码为普通字符串 /// </summary> /// <param name="str">要解码的字符串</param> private string Base64Decode(string str) { byte[] barray; barray = Convert.FromBase64String(str); return Encoding.Default.GetString(barray); } /// <summary> /// 得到上传附件的文件流 /// </summary> /// <param name="FilePath">附件的绝对路径</param> private string GetStream(string FilePath) { //建立文件流对象 System.IO.FileStream FileStr = new System.IO.FileStream(FilePath, System.IO.FileMode.Open); byte[] by = new byte[System.Convert.ToInt32(FileStr.Length)]; FileStr.Read(by, 0, by.Length); FileStr.Close(); return (System.Convert.ToBase64String(by)); } /// <summary> /// 发送SMTP命令 /// </summary> private bool SendCommand(string str) { byte[] WriteBuffer; if (str == null || str.Trim() == String.Empty) { return true; } logs += str; WriteBuffer = Encoding.Default.GetBytes(str); try { ns.Write(WriteBuffer, 0, WriteBuffer.Length); } catch { errmsg = "网络连接错误"; return false; } return true; } /// <summary> /// 接收SMTP服务器回应 /// </summary> private string RecvResponse() { int StreamSize; string ReturnValue = String.Empty; byte[] ReadBuffer = new byte[1024]; try { StreamSize = ns.Read(ReadBuffer, 0, ReadBuffer.Length); } catch { errmsg = "网络连接错误"; return "false"; } if (StreamSize == 0) { return ReturnValue; } else { ReturnValue = Encoding.Default.GetString(ReadBuffer).Substring(0, StreamSize); logs += ReturnValue + this.enter; return ReturnValue; } } /// <summary> /// 与服务器交互,发送一条命令并接收回应。 /// </summary> /// <param name="str">一个要发送的命令</param> /// <param name="errstr">如果错误,要反馈的信息</param> private bool Dialog(string str, string errstr) { if (str == null || str.Trim() == "") { return true; } if (SendCommand(str)) { string RR = RecvResponse(); if (RR == "false") { return false; } string RRCode = RR.Substring(0, 3); if (RightCodeHT[RRCode] != null) { return true; } else { if (ErrCodeHT[RRCode] != null) { errmsg += (RRCode + ErrCodeHT[RRCode].ToString()); errmsg += enter; } else { errmsg += RR; } errmsg += errstr; return false; } } else { return false; } } /// <summary> /// 与服务器交互,发送一组命令并接收回应。 /// </summary> private bool Dialog(string[] str, string errstr) { for (int i = 0; i < str.Length; i++) { if (!Dialog(str[i], "")) { errmsg += enter; errmsg += errstr; return false; } } return true; } /// <summary> /// SendEmail /// </summary> /// <returns></returns> private bool SendEmail() { //连接网络 try { tc = new TcpClient(mailserver, mailserverport); } catch (Exception e) { errmsg = e.ToString(); return false; } ns = tc.GetStream(); //验证网络连接是否正确 if (RightCodeHT[RecvResponse().Substring(0, 3)] == null) { errmsg = "网络连接失败"; return false; } string[] SendBuffer; string SendBufferstr; //进行SMTP验证 if (ESmtp) { SendBuffer = new String[4]; SendBuffer[0] = "EHLO " + mailserver + enter; SendBuffer[1] = "AUTH LOGIN" + enter; SendBuffer[2] = Base64Encode(username) + enter; SendBuffer[3] = Base64Encode(password) + enter; if (!Dialog(SendBuffer, "SMTP服务器验证失败,请核对用户名和密码。")) return false; } else { SendBufferstr = "HELO " + mailserver + enter; if (!Dialog(SendBufferstr, "")) return false; } // SendBufferstr = "MAIL FROM:<" + From + ">" + enter; if (!Dialog(SendBufferstr, "发件人地址错误,或不能为空")) return false; // SendBuffer = new string[recipientmaxnum]; for (int i = 0; i < Recipient.Count; i++) { SendBuffer[i] = "RCPT TO:<" + Recipient[i].ToString() + ">" + enter; } if (!Dialog(SendBuffer, "收件人地址有误")) return false; /* SendBuffer=new string[10]; for(int i=0;i<RecipientBCC.Count;i++) { SendBuffer[i]="RCPT TO:<" + RecipientBCC[i].ToString() +">" + enter; } if(!Dialog(SendBuffer,"密件收件人地址有误")) return false; */ SendBufferstr = "DATA" + enter; if (!Dialog(SendBufferstr, "")) return false; SendBufferstr = "From:" + FromName + "<" + From + ">" + enter; //if(ReplyTo.Trim()!="") //{ // SendBufferstr+="Reply-To: " + ReplyTo + enter; //} //SendBufferstr+="To:" + RecipientName + "<" + Recipient[0] +">" +enter; SendBufferstr += "To:=?" + Charset.ToUpper() + "?B?" + Base64Encode(RecipientName) + "?=" + "<" + Recipient[0] + ">" + enter; SendBufferstr += "CC:"; for (int i = 0; i < Recipient.Count; i++) { SendBufferstr += Recipient[i].ToString() + "<" + Recipient[i].ToString() + ">,"; } SendBufferstr += enter; SendBufferstr += ((Subject == String.Empty || Subject == null) ? "Subject:" : ((Charset == "") ? ("Subject:" + Subject) : ("Subject:" + "=?" + Charset.ToUpper() + "?B?" + Base64Encode(Subject) + "?="))) + enter; SendBufferstr += "X-Priority:" + priority + enter; SendBufferstr += "X-MSMail-Priority:" + priority + enter; SendBufferstr += "Importance:" + priority + enter; SendBufferstr += "X-Mailer: Lion.Web.Mail.SmtpMail Pubclass [cn]" + enter; SendBufferstr += "MIME-Version: 1.0" + enter; if (Attachments.Count != 0) { SendBufferstr += "Content-Type: multipart/mixed;" + enter; SendBufferstr += " boundary=/"=====" + (Html ? "001_Dragon520636771063_" : "001_Dragon303406132050_") + "=====/"" + enter + enter; } if (Html) { if (Attachments.Count == 0) { SendBufferstr += "Content-Type: multipart/alternative;" + enter;//内容格式和分隔符 SendBufferstr += " boundary=/"=====003_Dragon520636771063_=====/"" + enter + enter; SendBufferstr += "This is a multi-part message in MIME format." + enter + enter; } else { SendBufferstr += "This is a multi-part message in MIME format." + enter + enter; SendBufferstr += "--=====001_Dragon520636771063_=====" + enter; SendBufferstr += "Content-Type: multipart/alternative;" + enter;//内容格式和分隔符 SendBufferstr += " boundary=/"=====003_Dragon520636771063_=====/"" + enter + enter; } SendBufferstr += "--=====003_Dragon520636771063_=====" + enter; SendBufferstr += "Content-Type: text/plain;" + enter; SendBufferstr += ((Charset == "") ? (" charset=/"iso-8859-1/"") : (" charset=/"" + Charset.ToLower() + "/"")) + enter; SendBufferstr += "Content-Transfer-Encoding: base64" + enter + enter; SendBufferstr += Base64Encode("邮件内容为HTML格式,请选择HTML方式查看") + enter + enter; SendBufferstr += "--=====003_Dragon520636771063_=====" + enter; SendBufferstr += "Content-Type: text/html;" + enter; SendBufferstr += ((Charset == "") ? (" charset=/"iso-8859-1/"") : (" charset=/"" + Charset.ToLower() + "/"")) + enter; SendBufferstr += "Content-Transfer-Encoding: base64" + enter + enter; SendBufferstr += Base64Encode(Body) + enter + enter; SendBufferstr += "--=====003_Dragon520636771063_=====--" + enter; } else { if (Attachments.Count != 0) { SendBufferstr += "--=====001_Dragon303406132050_=====" + enter; } SendBufferstr += "Content-Type: text/plain;" + enter; SendBufferstr += ((Charset == "") ? (" charset=/"iso-8859-1/"") : (" charset=/"" + Charset.ToLower() + "/"")) + enter; SendBufferstr += "Content-Transfer-Encoding: base64" + enter + enter; SendBufferstr += Base64Encode(Body) + enter; } //SendBufferstr += "Content-Transfer-Encoding: base64"+enter; if (Attachments.Count != 0) { for (int i = 0; i < Attachments.Count; i++) { string filepath = (string)Attachments[i]; SendBufferstr += "--=====" + (Html ? "001_Dragon520636771063_" : "001_Dragon303406132050_") + "=====" + enter; //SendBufferstr += "Content-Type: application/octet-stream"+enter; SendBufferstr += "Content-Type: text/plain;" + enter; SendBufferstr += " name=/"=?" + Charset.ToUpper() + "?B?" + Base64Encode(filepath.Substring(filepath.LastIndexOf("//") + 1)) + "?=/"" + enter; SendBufferstr += "Content-Transfer-Encoding: base64" + enter; SendBufferstr += "Content-Disposition: attachment;" + enter; SendBufferstr += " filename=/"=?" + Charset.ToUpper() + "?B?" + Base64Encode(filepath.Substring(filepath.LastIndexOf("//") + 1)) + "?=/"" + enter + enter; SendBufferstr += GetStream(filepath) + enter + enter; } SendBufferstr += "--=====" + (Html ? "001_Dragon520636771063_" : "001_Dragon303406132050_") + "=====--" + enter + enter; } SendBufferstr += enter + "." + enter; if (!Dialog(SendBufferstr, "错误信件信息")) return false; SendBufferstr = "QUIT" + enter; if (!Dialog(SendBufferstr, "断开连接时错误")) return false; ns.Close(); tc.Close(); return true; } } /// <summary> /// 系统自带邮件发送 /// </summary> public class SysMail : ISmtpMail { /// <summary> /// 设定语言代码,默认设定为GB2312,如不需要可设置为"" /// </summary> private string _charset = "UTF-8"; /// <summary> /// 邮件服务器端口号 /// </summary> private int mailserverport = 25; /// <summary> /// 发件人地址 /// </summary> private string _from = ""; /// <summary> /// 发件人姓名 /// </summary> private string _fromName = ""; /// <summary> /// 收件人姓名 /// </summary> private string _recipientName = ""; //收件人地址 private string _recipient; /// <summary> /// 是否Html邮件 /// </summary> private bool _html = false; /// <summary> /// 邮件服务器域名 /// </summary> private string mailserver = ""; /// <summary> /// SMTP认证时使用的用户名 /// </summary> private string username = ""; /// <summary> /// SMTP认证时使用的密码 /// </summary> private string password = ""; /// <summary> /// 错误消息反馈 /// </summary> private string errmsg; /// <summary> /// 邮件主题 /// </summary> private string _subject; /// <summary> /// 邮件正文 /// </summary> private string _body; #region ISmtpMail 成员 /// <summary> /// /// </summary> public int MailDomainPort { set { this.mailserverport = value; } } /// <summary> /// /// </summary> public string From { get { return this._from; } set { this._from = value; } } /// <summary> /// /// </summary> public string FromName { get { return this._fromName; } set { this._fromName = value; } } /// <summary> /// /// </summary> public bool Html { get { return this._html; } set { this._html = value; } } /// <summary> /// /// </summary> public string Subject { get { return this._subject; } set { this._subject = value; } } /// <summary> /// /// </summary> public string Body { get { return this._body; } set { this._body = value; } } /// <summary> /// 设定语言代码,默认设定为GB2312,如不需要可设置为"" /// </summary> public string Charset { get { return this._charset; } set { this._charset = value; } } /// <summary> /// /// </summary> public string MailDomain { set { string maidomain = value.Trim(); int tempint; if (maidomain != "") { tempint = maidomain.IndexOf("@"); if (tempint != -1) { string str = maidomain.Substring(0, tempint); MailServerUserName = str.Substring(0, str.IndexOf(":")); MailServerPassWord = str.Substring(str.IndexOf(":") + 1, str.Length - str.IndexOf(":") - 1); maidomain = maidomain.Substring(tempint + 1, maidomain.Length - tempint - 1); } tempint = maidomain.IndexOf(":"); if (tempint != -1) { mailserver = maidomain.Substring(0, tempint); mailserverport = System.Convert.ToInt32(maidomain.Substring(tempint + 1, maidomain.Length - tempint - 1)); } else { mailserver = maidomain; } } } } /// <summary> /// /// </summary> public string MailServerUserName { set { this.username = value; } } /// <summary> /// /// </summary> public string MailServerPassWord { set { this.password = value; } } /// <summary> /// /// </summary> public string RecipientName { get { return this._recipientName; } set { this._recipientName = value; } } /// <summary> /// /// </summary> /// <param name="username"></param> /// <returns></returns> public bool AddRecipient(params string[] username) { this._recipient = username[0].Trim(); return true; } /// <summary> /// /// </summary> /// <returns></returns> public bool Send() { NetworkCredential myNetworkCredential = new NetworkCredential(this.username, this.password); SmtpClient Smtp = new SmtpClient(this.mailserver, this.mailserverport); Smtp.UseDefaultCredentials = false; Smtp.Credentials = myNetworkCredential; MailMessage Mail = new MailMessage(); Mail.Headers.Add("X-Priority", "3"); Mail.Headers.Add("X-MSMail-Priority", "Normal"); Mail.Headers.Add("X-Mailer", "Microsoft Outlook Express 6.00.2900.2869"); Mail.Headers.Add("X-MimeOLE", "Produced By Microsoft MimeOLE V6.00.2900.2869"); Mail.To.Add(this._recipient); Mail.From = new MailAddress(this._from); Mail.Subject = this._subject; Mail.Body = this._body; Mail.IsBodyHtml = this._html; Mail.Priority = MailPriority.High; Mail.SubjectEncoding = Encoding.GetEncoding(this._charset); try { Smtp.Send(Mail); return true; } catch (Exception E) { this.errmsg = E.Message; return false; } } /// <summary> /// /// </summary> public string ErrorMessage { get { return this.errmsg; } } #endregion } }  

  Common.SysMail Mail = new Common.SysMail();
            Mail.MailDomain = "smtp.163.com";
            Mail.MailDomainPort = 25;
            Mail.MailServerUserName = "137**@163.com";
            Mail.MailServerPassWord = "11li";
            Mail.From = "137**@163.com";
            Mail.FromName = "aa";
            Mail.Subject = "好酒店";
            Mail.Body = word;
            Mail.Charset = "utf-8";
            Mail.Html = true;
            string[] array = new string[1];
            array[0] = email;
            Mail.AddRecipient(array);
            Mail.Send();