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exception smtp Échec d'envoi du courrier?

StringBuilder emailMessage = new StringBuilder();
emailMessage.Append("Dear Payment Team ,");
emailMessage.Append("<br><br>Please find the Payment instruction");    

try
{
    MailMessage Msg = new MailMessage();
    // Sender e-mail address.
    Msg.From = new MailAddress("[email protected]");
    // Recipient e-mail address.
    Msg.To.Add("[email protected]");
    Msg.CC.Add("[email protected]");
    Msg.Subject = "Timesheet Payment Instruction updated";
    Msg.IsBodyHtml = true;
    Msg.Body = emailMessage.ToString();
    SmtpClient smtp = new SmtpClient();
    //smtp.EnableSsl = true;

    smtp.Host = ConfigurationManager.AppSettings["HostName"];
    smtp.Port = int.Parse(ConfigurationManager.AppSettings["PortNumber"]);
    smtp.Send(Msg);
    Msg = null;
    Page.RegisterStartupScript("UserMsg", "<script>alert('Mail has been sent successfully.')</script>");
}
catch (Exception ex)
{
    Console.WriteLine("{0} Exception caught.", ex);
}

Ajout de ce code dans web.config

<appSettings>
    <add key="HostName"   value="The Host name as given by my company" />
    <add key="PortNumber" value="25" />
</appSettings>

Je continue à avoir une exception essayé de changer le numéro de port comme spécifié mais sans succès

Détail de l'exception

  System.Net.Mail.SmtpException was caught
  Message=Failure sending mail.
  Source=System
  StackTrace:
       at System.Net.Mail.SmtpClient.Send(MailMessage message)
       at PAYMENT_DTALinesfollowup.Sendbtn_Click(Object sender, EventArgs e) in d:\AFSS-TFS\AFSS\Code\ERPNET\PAYMENT\DTALinesfollowup.aspx.cs:line 488
  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(ServicePoint servicePoint)
            at System.Net.Mail.SmtpTransport.GetConnection(ServicePoint servicePoint)
            at System.Net.Mail.SmtpClient.GetConnection()
            at System.Net.Mail.SmtpClient.Send(MailMessage message)
       InnerException: System.Net.Sockets.SocketException
            Message=A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected Host has failed to respond 125.63.68.148:25
            Source=System
            ErrorCode=10060
            NativeErrorCode=10060
            StackTrace:
                 at System.Net.Sockets.Socket.DoConnect(EndPoint endPointSnapshot, SocketAddress socketAddress)
                 at System.Net.ServicePoint.ConnectSocketInternal(Boolean connectFailure, Socket s4, Socket s6, Socket& socket, IPAddress& address, ConnectSocketState state, IAsyncResult asyncResult, Int32 timeout, Exception& exception)
            InnerException:
c#asp.netsmtp
7
vini

Vous devez donner un nom d'utilisateur et un mot de passe pour smtp.

Utilisez le code ci-dessous: -

    MailSettings.SMTPServer = Convert.ToString(ConfigurationManager.AppSettings["HostName"]);
    MailMessage Msg = new MailMessage();
    // Sender e-mail address.
    Msg.From = new MailAddress("[email protected]");
    // Recipient e-mail address.
    Msg.To.Add("[email protected]");
    Msg.CC.Add("[email protected]");
    Msg.Subject = "Timesheet Payment Instruction updated";
    Msg.IsBodyHtml = true;
    Msg.Body = emailMessage.ToString();
    NetworkCredential loginInfo = new NetworkCredential(Convert.ToString(ConfigurationManager.AppSettings["UserName"]), Convert.ToString(ConfigurationManager.AppSettings["Password"])); // password for connection smtp if u dont have have then pass blank

    SmtpClient smtp = new SmtpClient();
    smtp.UseDefaultCredentials = true;
    smtp.Credentials = loginInfo;
    //smtp.EnableSsl = true;
    //No need for port
    //smtp.Host = ConfigurationManager.AppSettings["HostName"];
    //smtp.Port = int.Parse(ConfigurationManager.AppSettings["PortNumber"]);
     smtp.Send(Msg);
5
Hiral

Premièrement, vous n'avez pas besoin de lire manuellement les valeurs dans votre fichier .config. Vous pouvez définir le dans la section System.Net et votre objet SmtpClient les lira automatiquement: 

<system.net>
    <mailSettings>
      <smtp from="Sender's display name &lt;[email protected]&gt;">
        <network Host="mailserver.yourdomain.com" port="25" userName="smtp_server_username" password="secret" defaultCredentials="false" />
      </smtp>
    </mailSettings>
  </system.net>

Ensuite, à partir de votre code, vous écrivez simplement:

        SmtpClient smtp = new SmtpClient();
        MailMessage mailMessage = new MailMessage();
        mailMessage.To.Add(new MailAddress("[email protected]", "Recipient Display Name"));
        mailMessage.Subject = "Some Subject";
        mailMessage.Body = "One gorgeous body";
        smtp.Send(mailMessage);

Pour revenir à votre erreur, il semblerait que vous ayez un problème de réseau.

2
Ben

Je vous suggère le moyen le plus simple d'envoyer un courrier électronique à une exception - en utilisant Elmah. Veuillez suivre cette ligne directrice pour la solution: https://www.stormconsultancy.co.uk/blog/development/tools-plugins/setup-email-alerts-from-elmah-when-exceptions-are- soulevé/

0
Anh Hoang

Une autre raison de cette exception pourrait être l'anti-virus installé sur votre système. Cela peut empêcher l’application d’envoyer des mails. Recherchez simplement une boîte de dialogue qui demande la permission d'envoyer des courriers via une application de votre système. 

0
the.net-learner
try
           {
               MailMessage mail = new MailMessage();
               //SmtpClient SmtpServer = new SmtpClient("smtp.google.com");
              SmtpClient SmtpServer = new SmtpClient(sServer);

              // SmtpClient SmtpServer = new SmtpClient("smtp.gmail.com", 587);
               mail.From = new MailAddress(sFromEmailId);
               mail.To.Add(sToEmailId);
               mail.Subject = sSubject;
               mail.Body = sMessage;
               mail.IsBodyHtml = true;             
               HttpFileCollection hfc = Request.Files;
               for (int i = 0; i < hfc.Count; i++)
               {
                   HttpPostedFile hpf = hfc[i];
                   if (hpf.ContentLength > 0)
                   {
                       mail.Attachments.Add(new Attachment(fupload.PostedFile.InputStream, hpf.FileName));

                   }
               }
               SmtpServer.Port = 587;
               //SmtpServer.Host = "smtp.gmail.com";
               SmtpServer.DeliveryMethod = SmtpDeliveryMethod.Network;
               SmtpServer.UseDefaultCredentials = false;
               SmtpServer.Credentials = new System.Net.NetworkCredential(sFromEmailId, sPassword);
               SmtpServer.EnableSsl = true;
               SmtpServer.Send(mail);                
               ClientScript.RegisterStartupScript(this.GetType(), "Alert", "dim('Mail Sent Successfully..!');", true);
               mail.Dispose();
           }
           catch (Exception ex)
           {                
               ClientScript.RegisterStartupScript(this.GetType(), "Alert", "dim('Error in Sending Mail..!');", true);
           }
0
venkatesh