问题发送电子邮件 [英] Problem with sending email

问题描述

SMTP的发送方法总是抛出异常。该消息是：发送邮件失败

下面是我的code：

 毫米MAILMESSAGE新= MAILMESSAGE（）;
mm.To.Add（[e-mail]）;mm.From =新的MailAddress（[e-mail]）;
mm.Subject =蚂蚁主题;
mm.Body =身体茶MEssag这里;SmtpClient SS =新SmtpClient（localhost的）;ss.EnableSsl = FALSE;尝试
{
    ** ss.Send（毫米）; **
    Result.Text =消息发送;
    Result.ForeColor = System.Drawing.Color.Green;
}
赶上（SmtpException前）
{
    Result.Text =消息发送失败：\\ n \\ n+ ex.Message;
    Result.ForeColor = System.Drawing.Color.Red;
}
 

我使用也试过

  ss.DeliveryMethod = SmtpDeliveryMethod.PickupDirectoryFromIis;
 

现在它不抛出任何异常，它执行罚款，但接收机没有接收任何邮件在他的收件箱。

我该如何解决这个问题？

编辑 - 这是堆栈跟踪即时得到

 消息=发送邮件失败。来源=系统堆栈跟踪：在System.Net.Mail.SmtpClient.Send
在WebApplication1._Default.Page_Load（对象发件人，EventArgs e）在D（消息MAILMESSAGE）：\\ Emcure-
库马尔\\工作\\不使用\\ WebApplication1 \\ WebApplication1 \\ Default.aspx.cs：第30行的InnerException：
System.Net.WebException消息=无法连接到远程服务器源=系统堆栈跟踪： - 
    在System.Net.ServicePoint.GetConnection（PooledStream PooledStream，对象所有者，布尔异步，
 ip地址和放大器;地址，插座及放大器; abortSocket，插座及放大器; abortSocket6，的Int32超时）在
System.Net.PooledStream.Activate（对象owningObject，布尔异步，的Int32超时，
GeneralAsyncDelegate的AsyncCallback）在System.Net.PooledStream.Activate（对象owningObject，
GeneralAsyncDelegate的AsyncCallback）在System.Net.ConnectionPool.GetConnection（对象owningObject，
GeneralAsyncDelegate的AsyncCallback，的Int32 creationTimeout）
    在System.Net.Mail.SmtpConnection.GetConnection（字符串主机，端口的Int32）的
System.Net.Mail.SmtpTransport.GetConnection（字符串主机，端口的Int32）的
System.Net.Mail.SmtpClient.GetConnection（）在System.Net.Mail.SmtpClient.Send（消息MAILMESSAGE）
的InnerException：System.Net.Sockets.SocketException消息=无法连接，因为进行
目标机器积极地拒绝它127.0.0.1:25来源=系统错误code = 10061 NativeError code = 10061
 

解决方案

您execption应包含比发送邮件失败的详细信息。

有关这个链接调试找对方法SmtpClient.Send抛出产生的异常详细信息 - >的 SmtpClient.Send方法

这code作品有smtp.google.com

 毫米MAILMESSAGE新= MAILMESSAGE（）;
        mm.From =新的MailAddress（XX）;
        mm.To.Add（XX）;
        mm.Subject =蚂蚁主题;
        mm.Body =身体茶MEssag这里;        SmtpClient SS =新SmtpClient（）;
        ss.Host =smtp.gmail.com;
        ss.Port = 587;
        ss.EnableSsl = TRUE;        ss.Credentials =新System.Net.NetworkCredential（XX，XX）;
        尝试
        {
            ss.Send（毫米）;
            Label1.Text =消息发送;
            Label1.ForeColor = System.Drawing.Color.Green;
        }
        赶上（SmtpException前）
        {
            Label1.Text =消息发送失败：\\ n \\ n+ ex.Message;
            Label1.ForeColor = System.Drawing.Color.Red;
        }
 

谷歌需要启用SSL和端口587是传出端口。你需要一个谷歌帐户，以及凭据。

没有错，你的code - 这是最有可能您的服务器或防火墙

The send method of SMTP is always throwing an exception. The message is : Failure sending mail

Here is my code:

MailMessage mm = new MailMessage();
mm.To.Add("[e-mail]");

mm.From = new MailAddress("[e-mail]");
mm.Subject = "Ant Subject";
mm.Body = "Body Cha MEssag here ";

SmtpClient ss = new SmtpClient("localhost");

ss.EnableSsl = false;

try
{
    **ss.Send(mm);**
    Result.Text = "Message Sent";
    Result.ForeColor = System.Drawing.Color.Green;
}
catch (SmtpException ex)
{
    Result.Text = "Message Not Sent : \n\n " + ex.Message;
    Result.ForeColor = System.Drawing.Color.Red;
}

I also tried using

ss.DeliveryMethod = SmtpDeliveryMethod.PickupDirectoryFromIis;

Now it doesn't throw any exception, it executes fine but receiver does not receive any mail in his inbox.

How can I fix this?

Edit - This is the stack trace im getting

    Message=Failure sending mail. Source=System StackTrace: at System.Net.Mail.SmtpClient.Send
(MailMessage message) at WebApplication1._Default.Page_Load(Object sender, EventArgs e) in D:\Emcure-
Kumar\Work\Not in Use\WebApplication1\WebApplication1\Default.aspx.cs:line 30 InnerException: 
System.Net.WebException Message=Unable to connect to the remote server Source=System StackTrace: –
    at System.Net.ServicePoint.GetConnection(PooledStream PooledStream, Object owner, Boolean async,
 IPAddress& address, Socket& abortSocket, Socket& abortSocket6, Int32 timeout) at 
System.Net.PooledStream.Activate(Object owningObject, Boolean async, Int32 timeout, 
GeneralAsyncDelegate asyncCallback) at System.Net.PooledStream.Activate(Object owningObject, 
GeneralAsyncDelegate asyncCallback) at System.Net.ConnectionPool.GetConnection(Object owningObject, 
GeneralAsyncDelegate asyncCallback, Int32 creationTimeout)
    at System.Net.Mail.SmtpConnection.GetConnection(String host, Int32 port) at 
System.Net.Mail.SmtpTransport.GetConnection(String host, Int32 port) at 
System.Net.Mail.SmtpClient.GetConnection() at System.Net.Mail.SmtpClient.Send(MailMessage message) 
InnerException: System.Net.Sockets.SocketException Message=No connection could be made because the 
target machine actively refused it 127.0.0.1:25 Source=System ErrorCode=10061 NativeErrorCode=10061

解决方案

Your execption should contain more info than "Failure sending mail"

For debugging look at this link for details on the Exeptions thrown by SmtpClient.Send Method - > SmtpClient.Send Method

This code works with "smtp.google.com"

        MailMessage mm = new MailMessage();
        mm.From = new MailAddress("xx");
        mm.To.Add("xx");
        mm.Subject = "Ant Subject"; 
        mm.Body = "Body Cha MEssag here ";

        SmtpClient ss = new SmtpClient();
        ss.Host="smtp.gmail.com";
        ss.Port = 587;
        ss.EnableSsl = true;

        ss.Credentials = new System.Net.NetworkCredential("xx", "xx");
        try 
        { 
            ss.Send(mm); 
            Label1.Text = "Message Sent";
            Label1.ForeColor = System.Drawing.Color.Green; 
        }
        catch (SmtpException ex) 
        { 
            Label1.Text = "Message Not Sent : \n\n " + ex.Message;
            Label1.ForeColor = System.Drawing.Color.Red;
        }

Google requires SSL enabled and port 587 to be the outgoing port. You need a google account as well for credentials.

Nothing wrong with your code - it's most likely your server or firewall

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