Help!!! Send Email with Authentication

Hi. I need help!!!

I'm trying to send a email with smpt basic authentication (username and password) with Visual Basic 2005... but...!i can't!

Can anyone please help me

I need to use ICredentialsByHost

Thanks a lot and sorry if my english is not very good!

Answer this question

Help!!! Send Email with Authentication

Pockey

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!!!

Trini_Pierre

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
jaggex
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)
Kline Chen China
anybody have any solution I'm having the same problem. Thanks
MariaMM
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!
Sam Vella
Just want to thank you man. It works very good.
M. U.
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")
lleoneye

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")
TELII
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 !
Terotech.Com Ltd
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
abi
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!!

tlc660

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)

AlexCr
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
Help!!! Send Email with Authentication

Answer this question