发送电子邮件的问题

Question

SMTP的发送方法始终引发异常。该消息是：发送邮件失败

这里是我的代码：

MailMessage mm = new MailMessage(); 
mm.To.Add("Yuvraj.dhot@xxxxx.co.in"); 

mm.From = new MailAddress("Kumar.Chaudhari@xxxxx.co.in"); 
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; 
} 

我使用

ss.DeliveryMethod = SmtpDeliveryMethod.PickupDirectoryFromIis; 

现在，它不会引发任何异常也试过，它执行罚款，但接收器在他的收件箱中没有收到任何邮件。

我该如何解决这个问题？

编辑 - 这是堆栈跟踪即时得到

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 

Answer 1

尝试在你的web.config第一次使用此：

<system.net> 
    <mailSettings> 
     <!-- Use this setting for development 
     <smtp deliveryMethod="Network"> 
     <network host="mail.mydomain.com" port="25" /> 
     </smtp> 
     --> 
     <smtp deliveryMethod="SpecifiedPickupDirectory"> 
     <specifiedPickupDirectory pickupDirectoryLocation="C:\Tmp"/> 
     </smtp> 
    </mailSettings> 
    </system.net> 

这会将所有文件复制到C：\ TMP。 你可以只实例化类是这样的：

SmtpClient client = new SmtpClient(); 

而改变配置在你的web.config之后。试试看，如果这有帮助，请告诉我们。

Answer 2

你execption应包含比“发送邮件失败”

对于这个链接调试找对方法SmtpClient.Send抛出产生的异常细节的详细信息 - >SmtpClient.Send Method

该代码可以使用“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; 
     } 

谷歌需要启用SSL和端口587是输出端口。您还需要一个Google帐户以及凭据。

没有错，你的代码 - 这是最有可能您的服务器或防火墙

Answer 3

试试这个

SmtpClient smtpClient = new SmtpClient(); 
    MailMessage message = new MailMessage(); 

    try 
    { 
     // System.Net.Mail.MailMessage msg = new System.Net.Mail.MailMessage(); 
     MailAddress fromAddress = new MailAddress(txt_name.Text, txt_to.Text); 


     smtpClient.Host = "smtp.gmail.com"; 


     smtpClient.Port = 25; 

     // msg.From = new System.Net.Mail.MailAddress("xyz@gmail.com"); 

     message.From = fromAddress; 

     message.To.Add("xyz111@gmail.com"); 


     message.Body = txt_des.Text; 
     smtpClient.EnableSsl = true; 

     System.Net.NetworkCredential NetworkCred = new System.Net.NetworkCredential(); 

     NetworkCred.UserName = "xyz@gmail.com"; 

     NetworkCred.Password = "xtz"; 

     smtpClient.UseDefaultCredentials = true; 

     smtpClient.Credentials = NetworkCred; 


     smtpClient.Send(message); 

     lblStatus.Text = "Email successfully sent."; 
    } 
    catch (Exception ex) 
    { 
     lblStatus.Text = "Send Email Failed." + ex.Message; 
    } 

Answer 4

我有同样的问题，而且是我代理，我不知道是不是真的，因为我即有一个具有良好配置的代理，并且我读取了一个C＃应用程序获取OS代理的配置。我只是改变我的conecction一些没有代理和运行得很好。所有的解决方案，第一，第二和第三。也许是代理或防火墙，或者尝试在其他PC上进行确认。我希望能帮助你。