Help!!! Send Email with Authentication

Help!!! Send Email with Authentication

• tealeh

  Hi!
  
  There are some new APIs in the .NET Framework 2.0 that provide the functionality you're looking for.  If you need to pass a username and password, you're correct--an implementation of ICredentialByHost is required.  Here's a quick sample that might help you out:
  

  Imports System.Net.Mail
  Public Sub SendMail()
     Dim hostName As String = "[Insert URL Here]"   
     Dim mailWriter As New SmtpClient(hostName) 
     'NetworkCredential provides a basic implementation of ICredntials 
     'and ICredentialsByHost that can be used to perform password authentication.
     mailWriter.Credentials = New NetworkCredential("username", "password")
     mailWriter.Send("From@Address.Com", "To@Address.Com", "Sample Subject", "Body of message goes here.")
  End Sub
  
  Hope this helps!
  
  Joe Binder
  The VB Team

  
  

• ILV

  Bummer!
  
  In order to get a better idea of why this is failing, I'll need a bit more information about the error you're receiving.  Can you give the contents of the "Message" and "StackTrace" of the InnerException.  The InnerException is a property of the exception you're receiving, and it typically has considerably more detail than the outer exception.
  
  Thanks.
  
  Joe
  
  

• Tony Long

  I hope this code will help you / Espero que os ayude:

          Dim clsMail As New System.Net.Mail.MailMessage
          Dim clsCliente As New System.Net.Mail.SmtpClient
          Dim clsDireccion As MailAddress
          Dim objCredencial As New System.Net.NetworkCredential

          ' Datos de configuracion de la cuenta
          objCredencial.UserName = "user"
          objCredencial.Password = "pass"

          ' Direccion que envia el correo
          clsDireccion = New MailAddress("user@domain.com", "Name")

          ' Creamos el mensaje a enviar / Configuring Message 
          clsMail.To.Add("user@anotherdomain.es")
          clsMail.Subject = "Pruebas"
          clsMail.From = clsDireccion
          clsMail.Body = "Este es un mail de prueba"
  

          '' Conexion al servidor SMTP / Connection to SMTP server
          clsCliente.Host = "server.domain.es"
          clsCliente.Credentials = objCredencial

          '' Envio del mail / Send mail
          clsCliente.Send(clsMail)

          MsgBox("Enviado")

   

  
  

• Patrick Severijns

  Hi again. Thanks for the response... but don't work for me.
  
  I get this error: "Failure Sending Mail".
  
  If i send the email "FROM" and "TO" the same email address i can send the email ok... but if i select the "TO" from another domain i get this error.
  
  Sorry if my english is not very good!
  
  
  
  
  
  

• iceberg777

  Hi again!
  
  I get this error in the "ex.InnerException.Message"
  
  The error description is in Spanish...: "El simbolo proporcionado a la funcion no es valido"
  
  The english translation... "The symbol provided to the function is not valid"
  
  And in the ex.Message i get: "Failure sending mail."
  
  Thanks again!!!
  
  PD: The complete error (ex.InnerException.toString)
  

  System.ComponentModel.Win32Exception: El simbolo proporcionado a la funcion no es valido

     at System.Net.NTAuthentication.GetOutgoingBlob(Byte[] incomingBlob, Boolean throwOnError, Int32& statusCode)

     at System.Net.NTAuthentication.GetOutgoingBlob(String incomingBlob)

     at System.Net.Mail.SmtpNtlmAuthenticationModule.Authenticate(String challenge, NetworkCredential credential, Object sessionCookie)

     at System.Net.Mail.SmtpNtlmAuthenticationModule.Authenticate(String challenge, NetworkCredential credential, Object sessionCookie)

     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)

  
  
  
  
  
  

• IanBlackburn

  Any help with this error
  
  My email server is KERIO MAIL SERVER and i don't have problem with Outlook, Eudora or other email clients.
  
  Thanks !
  
  

• johnko

  RSantana wrote:

  anybody have any solution I'm having the same problem. Thanks

  well what problem are you having Take a look at this in the meantime:

  http://forums.microsoft.com/MSDN/ShowPost.aspx PostID=928163&SiteID=1

  
  
  

• Sorin Sandu

  anybody have any solution I'm having the same problem. Thanks
  
  

• pshashnak1

  I have exactly the same problem. I am using C# with ASP.NET 2.0 (VS 2005 RC1) and when I call smptclient.Send(msg) I get "Failure Sending Mail" and that is it. Any help will be greatly appreciated. Nobody has solved this issue yet in any of the postings I have found here and in Google.
  
  
  If I copy / paste the code into VS 2003 with .Net 1.1 everything works great.
  
  thank you!!
  
  

• avinash prasad

  Maybe this will help someone. I had the same problem with Kerio mail server and this fixed it. It was the UseDefaultCredentials property that fixed it for me.

  mySMTP.UseDefaultCredentials = False

  mySMTP.Credentials = New Net.NetworkCredential("username", "password")

  
  

• BBushmaker

  Just want to thank you man. It works very good.
  
  

• Arne

  Hi again.
  
  I can't send a email with authentication. :( 
  
  I allways get the same error.
  

  System.Net.Mail.SmtpException was caught   Message="Failure sending mail."   Source="System"   StackTrace:        at System.Net.Mail.SmtpClient.Send(MailMessage message)        at System.Net.Mail.SmtpClient.Send(String from, String recipients, String subject, String body)        at WindowsApplication1.Form1.Button1_Click(Object sender, EventArgs e)

  
  
  ComponentModel.Win32Exception
  {"El simbolo proporcionado a la funcion no es valido"}
  {System.Collections.ListDictionaryInternal}
  
  Where is the problem.
  
  I use the same code of Joe_MS.
  
  Thanks!!!
  
  

• ziad dodin

  Any help
  
  I try a lot of things... but don't work. With email servers that don't require authentication all work fine... but... when i need to send the username and password... error. :(
  
  Thanks again (and sorry if my english is not very good)
  
  
• Help!!! Send Email with Authentication