using System;
using System.Text;
using System.IO;
using System.Net;
using System.Net.Sockets;
using System.Collections;namespace Huolx.Pubclass
{
/// <summary>
/// <para>支持SMTP服务器认证的邮件发送类</para>
/// <para></para>
/// <para>ver 1.0B</para>
/// <para>属性和方法设置类似于Jmail。</para>
/// <para></para>
/// <para>Huolx([email protected])版权所有,转载请保留。</para>
/// </summary>
/// <res>
/// <para>这是我学C#后写的第一个比较拿得出手的东西,肯定有很多错误之处,还望各位高手指正。</para>
/// <para></para>
/// <para>写它的原因就是.net自带的SmtpMail不支持SMTP认证(说句题外话,我真很奇怪,
/// 从ASP到ASP.NET,M$的邮件组件老是慢半拍,ASP中的CDONTS难得能有正常使用的,
/// 到了.NET时代,SMTP服务器基本都得验证才能用,.NET的SmtpMail又不支持验证,
/// 真是~~~),我费了好几天功夫才弄明白怎样把原来的Jmail怎么弄到.NET下用,
/// 可用起来还是比较麻烦,正好买了本《C#网络程序设计》,作为实践项目,也是为了
/// 让自己以后轻松一点,我写了这个东西。</para>
/// <para></para>
/// <para>程序架构可能有些乱,都是原来写ASP时留下的毛病,如果那位能帮我弄得整齐一点,小弟感激不尽。</para>
/// <para></para>
/// <para>欢迎大家提出修改建议,或者自行修改,最好能把修改稿Mail给我一份,让我也学习学习 ^_^。</para>
/// </res>
public class ESmtpMail
{ /// <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="GB2312"; /// <summary>
/// 发件人地址
/// </summary>
public string From=""; /// <summary>
/// 发件人姓名
/// </summary>
public string FromName=""; /// <summary>
/// 回复邮件地址
/// </summary>
public string ReplyTo=""; /// <summary>
/// 邮件服务器域名
/// </summary>
private string mailserver=""; /// <summary>
/// 邮件服务器域名和验证信息
/// 形如:"user:[email protected]:25",也可省略次要信息。如"user:[email protected]"或"www.server.com"
/// </summary>
public string MailDomain
{
set
{
string maidomain=value.Trim();
int tempint; if(maidomain!="")
{
tempint=maidomain.IndexOf("@");
if(tempint!=-1)
{
string up=maidomain.Substring(0,tempint);
MailServerUserName=up.Substring(0,up.IndexOf(":"));
MailServerPassWord=up.Substring(up.IndexOf(":")+1,up.Length-up.IndexOf(":")-1);
string ms=maidomain.Substring(tempint+1,maidomain.Length-tempint-1);
tempint=ms.IndexOf(":");
if(tempint!=-1)
{
mailserver=ms.Substring(0,tempint);
mailserverport=System.Convert.ToInt32(ms.Substring(tempint+1,ms.Length-tempint-1));
}
}
else
{
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>
private int mailserverport=25; /// <summary>
/// 邮件服务器端口号
/// </summary>
public int MailDomainPort
{
set
{
mailserverport=value;
}
}
/// <summary>
/// 是否需要SMTP验证
/// </summary>
private bool ESmtp=false; /// <summary>
/// SMTP认证时使用的用户名
/// </summary>
private string username=""; /// <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>
private string password=""; /// <summary>
/// SMTP认证时使用的密码
/// </summary>
public string MailServerPassWord
{
set
{
password=value;
}
}
using System.Text;
using System.IO;
using System.Net;
using System.Net.Sockets;
using System.Collections;namespace Huolx.Pubclass
{
/// <summary>
/// <para>支持SMTP服务器认证的邮件发送类</para>
/// <para></para>
/// <para>ver 1.0B</para>
/// <para>属性和方法设置类似于Jmail。</para>
/// <para></para>
/// <para>Huolx([email protected])版权所有,转载请保留。</para>
/// </summary>
/// <res>
/// <para>这是我学C#后写的第一个比较拿得出手的东西,肯定有很多错误之处,还望各位高手指正。</para>
/// <para></para>
/// <para>写它的原因就是.net自带的SmtpMail不支持SMTP认证(说句题外话,我真很奇怪,
/// 从ASP到ASP.NET,M$的邮件组件老是慢半拍,ASP中的CDONTS难得能有正常使用的,
/// 到了.NET时代,SMTP服务器基本都得验证才能用,.NET的SmtpMail又不支持验证,
/// 真是~~~),我费了好几天功夫才弄明白怎样把原来的Jmail怎么弄到.NET下用,
/// 可用起来还是比较麻烦,正好买了本《C#网络程序设计》,作为实践项目,也是为了
/// 让自己以后轻松一点,我写了这个东西。</para>
/// <para></para>
/// <para>程序架构可能有些乱,都是原来写ASP时留下的毛病,如果那位能帮我弄得整齐一点,小弟感激不尽。</para>
/// <para></para>
/// <para>欢迎大家提出修改建议,或者自行修改,最好能把修改稿Mail给我一份,让我也学习学习 ^_^。</para>
/// </res>
public class ESmtpMail
{ /// <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="GB2312"; /// <summary>
/// 发件人地址
/// </summary>
public string From=""; /// <summary>
/// 发件人姓名
/// </summary>
public string FromName=""; /// <summary>
/// 回复邮件地址
/// </summary>
public string ReplyTo=""; /// <summary>
/// 邮件服务器域名
/// </summary>
private string mailserver=""; /// <summary>
/// 邮件服务器域名和验证信息
/// 形如:"user:[email protected]:25",也可省略次要信息。如"user:[email protected]"或"www.server.com"
/// </summary>
public string MailDomain
{
set
{
string maidomain=value.Trim();
int tempint; if(maidomain!="")
{
tempint=maidomain.IndexOf("@");
if(tempint!=-1)
{
string up=maidomain.Substring(0,tempint);
MailServerUserName=up.Substring(0,up.IndexOf(":"));
MailServerPassWord=up.Substring(up.IndexOf(":")+1,up.Length-up.IndexOf(":")-1);
string ms=maidomain.Substring(tempint+1,maidomain.Length-tempint-1);
tempint=ms.IndexOf(":");
if(tempint!=-1)
{
mailserver=ms.Substring(0,tempint);
mailserverport=System.Convert.ToInt32(ms.Substring(tempint+1,ms.Length-tempint-1));
}
}
else
{
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>
private int mailserverport=25; /// <summary>
/// 邮件服务器端口号
/// </summary>
public int MailDomainPort
{
set
{
mailserverport=value;
}
}
/// <summary>
/// 是否需要SMTP验证
/// </summary>
private bool ESmtp=false; /// <summary>
/// SMTP认证时使用的用户名
/// </summary>
private string username=""; /// <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>
private string password=""; /// <summary>
/// SMTP认证时使用的密码
/// </summary>
public string MailServerPassWord
{
set
{
password=value;
}
}
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/// 邮件主题
/// </summary>
public string Subject="";
/// <summary>
/// 是否Html邮件
/// </summary>
public bool Html=false; /// <summary>
/// 邮件正文
/// </summary>
public string Body=""; /// <summary>
/// 收件人列表
/// </summary>
private Hashtable Recipient=new Hashtable(); /// <summary>
/// 密送收件人列表
/// </summary>
private Hashtable RecipientBCC=new Hashtable(); /// <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="Normal";
break;
}
}
}
/// <summary>
/// 错误消息反馈
/// </summary>
private string errmsg; /// <summary>
/// 错误消息反馈
/// </summary>
public string ErrorMessage
{
get
{
return errmsg;
}
} /// <summary>
/// 服务器交互记录
/// </summary>
private string logs=""; /// <summary>
/// 服务器交互记录,如发现本组件不能使用的SMTP服务器,请将出错时的Logs发给我([email protected]),我将尽快查明原因。
/// </summary>
public string Logs
{
get
{
return logs;
}
}
private string enter="\r\n";
/// <summary>
/// TcpClient对象,用于连接服务器
/// </summary>
private TcpClient tc; /// <summary>
/// NetworkStream对象
/// </summary>
private NetworkStream ns; /// <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>
/// 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<CRLF>.<CRLF>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="estr">要编码的字符串</param>
private string Base64Encode(string estr)
{
byte[] barray;
barray=Encoding.Default.GetBytes(estr);
return Convert.ToBase64String(barray);
}
/// <summary>
/// 将Base64字符串解码为普通字符串
/// </summary>
/// <param name="dstr">要解码的字符串</param>
private string Base64Decode(string dstr)
{
byte[] barray;
barray=Convert.FromBase64String(dstr);
return Encoding.Default.GetString(barray);
}
public ESmtpMail()
{
} ~ESmtpMail()
{
}
/// <summary>
/// 收件人姓名
/// </summary>
public string RecipientName="";
private int RecipientNum=0;//收件人数量
private int RecipientBCCNum=0;//密件收件人数量 /// <summary>
/// 添加一个收件人
/// </summary>
/// <param name="str">收件人地址</param>
public bool AddRecipient(string str)
{
str=str.Trim();
if(str==null||str==""||str.IndexOf("@")==-1)
return true;
if(RecipientNum<10)
{
Recipient.Add(RecipientNum,str);
RecipientNum++;
return true;
}
else
{
errmsg+="收件人过多";
return false;
}
}
/// <summary>
/// 添加一组收件人(不超过10个),参数为字符串数组
/// </summary>
/// <param name="str">保存有收件人地址的字符串数组(不超过10个)</param>
public bool AddRecipient(string[] str)
{
for(int i=0;i<str.Length;i++)
{
if(!AddRecipient(str[i]))
{
return false;
}
}
return true;
}
/// <summary>
/// 添加一个密件收件人
/// </summary>
/// <param name="str">收件人地址</param>
public bool AddRecipientBCC(string str)
{
if(str==null||str.Trim()=="")
return true;
if(RecipientBCCNum<10)
{
RecipientBCC.Add(RecipientBCCNum,str);
RecipientBCCNum++;
return true;
}
else
{
errmsg+="收件人过多";
return false;
}
}
/// <summary>
/// 添加一组密件收件人(不超过10个),参数为字符串数组
/// </summary>
/// <param name="str">保存有收件人地址的字符串数组(不超过10个)</param>
public bool AddRecipientBCC(string[] str)
{
for(int i=0;i<str.Length;i++)
{
if(!AddRecipientBCC(str[i]))
{
return false;
}
}
return true;
}
/// <summary>
/// 发送SMTP命令
/// </summary>
private bool SendCommand(string Command)
{
byte[] WriteBuffer;
if(Command==null||Command.Trim()=="")
{
return true;
}
logs+=Command;
WriteBuffer = Encoding.Default.GetBytes(Command);
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 = "";
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;
return ReturnValue;
}
}
/// <summary>
/// 与服务器交互,发送一条命令并接收回应。
/// </summary>
/// <param name="Command">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 Command,string errstr)
{
if(Command==null||Command.Trim()=="")
{
return true;
}
if(SendCommand(Command))
{
string RR=RecvResponse();
if(RR=="false")
{
return false;
}
string RRCode=RR.Substring(0,3);
if(RightCodeHT[RRCode]!=null)
{
return true;
}
else
{
errmsg+=(RRCode+ErrCodeHT[RRCode].ToString());
errmsg+=enter;
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[] Command,string errstr)
{
for(int i=0;i<Command.Length;i++)
{
if(!Dialog(Command[i],""))
{
errmsg+=enter;
errmsg+=errstr;
return false;
}
} return true;
} private bool SendEmail()
{
//连接网络
try
{
tc=new TcpClient(mailserver,mailserverport);
}
catch(Exception e)
{
errmsg=e.ToString();
return false;
} ns = tc.GetStream();
SMTPCodeAdd(); //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"))
return false; //
SendBuffer=new string[10];
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;
SendBufferstr+="To:" + RecipientName + "<" + Recipient[0] +">" +enter;
SendBufferstr+="CC:";
for(int i=1;i<Recipient.Count;i++)
{
SendBufferstr+=Recipient[i].ToString() + "<" + Recipient[i].ToString() +">,";
}
SendBufferstr+=enter;
if(ReplyTo.Trim()!="")
{
SendBufferstr+="Reply-To: " + ReplyTo + enter;
} if(Charset=="")
{
SendBufferstr+="Subject:" + Subject + enter;
}
else
{
SendBufferstr+="Subject:" + "=?" + Charset.ToUpper() + "?B?" + Base64Encode(Subject) +"?=" +enter;
} SendBufferstr+="MIME-Version: 1.0" + enter; if(Html)
{
SendBufferstr+="Content-Type: text/html;" + enter;
}
else
{
SendBufferstr+="Content-Type: text/plain;" + enter;
} if(Charset=="")
{
SendBufferstr+="charset=\"iso-8859-1\"" + enter;
}
else
{
SendBufferstr+="charset=\"" + Charset.ToLower() + "\"" + enter;
} SendBufferstr+="Content-Transfer-Encoding: base64" + enter;
SendBufferstr+="X-Priority:" + priority + enter;
SendBufferstr+="X-MSMail-Priority:" + priority + enter;
SendBufferstr+="Importance:" + priority + enter;
SendBufferstr+="X-Mailer: Huolx.Pubclass" + enter;
SendBufferstr+= enter + enter;
SendBufferstr+= Base64Encode(Body) + 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>
/// 发送邮件方法,所有参数均通过属性设置。
/// </summary>
public bool Send()
{
if(Recipient.Count==0)
{
errmsg="收件人列表不能为空";
return false;
} if(RecipientName=="")
RecipientName=Recipient[0].ToString(); if(mailserver.Trim()=="")
{
errmsg="必须指定SMTP服务器";
return false;
} return SendEmail();
}
/// <summary>
/// 发送邮件方法
/// </summary>
/// <param name="smtpserver">smtp服务器信息,如"username:[email protected]: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:[email protected]: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="replyto">回复邮件地址</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 replyto,string to,string toname,bool html,string subject,string body)
{
MailDomain=smtpserver;
From=from;
FromName=fromname;
ReplyTo=replyto;
AddRecipient(to);
RecipientName=toname;
Html=html;
Subject=subject;
Body=body;
return Send();
}
}
}
修正列表:
1.SMTP服务器返回错误代码未知时,导致页面终止。
2.MailDomain属性设置错误。一个重要注意事项:许多SMTP服务器不只需要登陆验证,还对From作了验证(比如263),如果和登陆用的用户名不符也不能发信,这时的错误返回信息是;
553 邮箱名不可用
碰到这样的情况您可以将From属性设为您所用SMTP服务器上的邮件地址。然后将FromName和ReplyTo设为您想让收信人回复的地址就可以了。
Dim email as new ESmtpMail
email.AddRecipient("[email protected]")
email.From = "[email protected]"
email.ReplyTo = "[email protected]"
email.Subject = "aaaaa"
email.Body = "ewfawefewfewafefwefwefawefewaf"
email.MailServerUserName="xxx"
email.MailServerPassWord="xxx"
email.MailDomainPort=25
email.MailDomain="xxx.xxx.xxx.xxx" '这个邮件服务器有SMTP认证 if email.send() then
response.write ("send OK!")
else
response.write(email.ErrorMessage)
end if空间为:<%@ import Namespace="Huolx.Pubclass" %>程序执行没有错误,可邮件收不到。打印email.ErrorMessage出现如下错误:System.Net.Sockets.SocketException: 无法立即完成一个非阻挡性套接字操作。 at System.Net.Sockets.Socket.Connect(EndPoint remoteEP) at System.Net.Sockets.TcpClient.Connect(IPEndPoint remoteEP) at System.Net.Sockets.TcpClient.Connect(IPAddress address, Int32 port) at System.Net.Sockets.TcpClient.Connect(String hostname, Int32 port) at System.Net.Sockets.TcpClient..ctor(String hostname, Int32 port) at Huolx.Pubclass.ESmtpMail.SendEmail()不知道哪里错了,请帮忙查看一下。 谢谢!