Sending Email Using C#

Matiki Mahlangu

Hi There
I'm trying to write a code that send email. Created a service, deployed in the server where i have configured the smtp settings.
When sending the email i'm getting the following error and also see the piece of code.
"The remote name could not be resolved. smtp.servername.edu.gov.za"

MailMessage mail = new MailMessage();

SmtpClient SmtpServer = new SmtpClient("smtp server");
mail.From =
new MailAddress("source");
mail.To.Add(
"destination");
mail.Subject =
"Testing";
mail.Body =
"Awe TestingL";
SmtpServer.Port = 25;

SmtpServer.EnableSsl =
true;

SmtpServer.Send(mail);
MessageBox.Show("mail Send");

May you please assist.

2 Replies

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Matiki Mahlangu12y ago
Thanks

I think my smtp settings were not configured correctly.

I'm finding difficult to do the smtp service testing
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Dipankar Biswas12y ago
Could you please go little deeper into the exception details by checking the innerException messages by using following code.

Try
    ' some code that is susceptible to throw exception.
Catch ex As Exception
    Response.Write(ex.Message)
    While Not ex.InnerException Is Nothing
          Response.Write(ex.InnerException.Message)
          ex = ex.InnerException
    End While
End Try

It would be giving u the detail description of what might be the problem.Also check that there might be some problem in connecting to remote server as exception implies "WebException , the remote name could not be resolved".

see this link.http://forums.asp.net/t/992641.aspx?WebException+the+remote+name+could+not+be+resolved
or see this example

...

using System;
using System.Windows.Forms;
using System.Net.Mail;

namespace WindowsApplication1
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}

private void button1_Click(object sender, EventArgs e)
{
try
{
MailMessage mail = new MailMessage();
SmtpClient SmtpServer = new SmtpClient("smtp.gmail.com");

mail.From = new MailAddress("[email protected]");
mail.To.Add("to_address");
mail.Subject = "Test Mail";
mail.Body = "This is for testing SMTP mail from GMAIL";

SmtpServer.Port = 587;
SmtpServer.Credentials = new System.Net.NetworkCredential("username", "password");
SmtpServer.EnableSsl = true;

SmtpServer.Send(mail);
MessageBox.Show("mail Send");
}
catch (Exception ex)
{
MessageBox.Show(ex.ToString());
}
}
}
}

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