Getting error while trying to send email from ASP.net application?

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In my application I would like to send a mail and I am using the below code, but I get the error:

Could not send the e-mail - error: Failure sending mail.

C#

protected void btnsend_Click(object sender, EventArgs e)
   {
       try
       {
           MailMessage mailMessage = new MailMessage();
           mailMessage.To.Add("xxx@gmail.com");
           mailMessage.From = new MailAddress("xxxx@gmail.com");
           mailMessage.Subject = "ASP.NET e-mail test";
           mailMessage.Body = "Hello world,\n\nThis is an ASP.NET test e-mail!";
           SmtpClient smtpClient = new SmtpClient("smtp.your-isp.com");
           smtpClient.Send(mailMessage);
           Response.Write("E-mail sent!");
       }
       catch (Exception ex)
       {
           Response.Write("Could not send the e-mail - error: " + ex.Message);
       }
   }

Here we are not giving the sender(from)password then how the system will send mail from that sender?

Posted 17-Dec-12 3:17am

Am Gayathri

Updated 17-Dec-12 4:20am

André Kraak

v3

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ridoy 17-Dec-12 15:00pm

where is your port number to send a mail?..i think you miss that

2 solutions

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Zafar Sultan · Answer 1 · 2012-12-17T03:20:00

Solution 1

What's the error you are getting? Have a look at this sample:
Send Mail / Contact Form using ASP.NET and C#[^]

Posted 17-Dec-12 3:20am

Zafar Sultan

Updated 17-Dec-12 3:23am

v2

Comments

Am Gayathri 17-Dec-12 9:21am

Could not send the e-mail - error: Failure sending mail.

Zafar Sultan 17-Dec-12 9:24am

I have updated the reply. Check the sample and see if it works for you.

Am Gayathri 17-Dec-12 9:36am

Ok i will check. But one doubt here we are not giving the sender(from)password then how the system will send mail from that sender?

[no name] 17-Dec-12 10:56am

Make sure that you are having the correct value for the following values.
smtp.Host = "your server host address";
smtp.Port = server port number;

Am Gayathri 18-Dec-12 9:24am

How will i get server port number?

Zafar Sultan 18-Dec-12 10:22am

Can you share your code? because all the solutions suggested to you does work. regarding port number, it is the port number that your SMTP server use for e-mails. In general, it is 25. For example, Gmail's SMTP server use port 587 as described in the solution below.

Krunal Rohit · Answer 2 · 2012-12-17T05:11:00

Solution 2

C#

var smtp = new System.Net.Mail.SmtpClient();
    {
        smtp.Host = "smtp.gmail.com";
        smtp.Port = 587;
        smtp.EnableSsl = true;
        smtp.DeliveryMethod = System.Net.Mail.SmtpDeliveryMethod.Network;
        smtp.Credentials = new NetworkCredential(fromAddress, fromPassword);
        smtp.Timeout = 20000;
    }
    // Passing values to smtp object
    smtp.Send(fromAddress, toAddress, subject, body);

Posted 17-Dec-12 5:11am

Krunal Rohit

Comments

Am Gayathri 18-Dec-12 5:00am

Hai Krunal,
Can you please give the complete code?
here where should i add this?

Am Gayathri 18-Dec-12 5:47am

Error 1 The type or namespace name 'NetworkCredential' could not be found (are you missing a using directive or an assembly reference?)
getting this error while trying