Sending email via C#

Question

I am trying to send an email from my project, but I'm having some trouble...

I'm using this code:

private void SendMail()
{
    MailMessage mail = new MailMessage(MailSender, MailReciever, MailSubject, MailContent);
    SmtpClient client = new SmtpClient(SMTPServer);

    client.Send(mail);
}

Then I get an exception :

The SMTP server requires a secure connection or the client was not authenticated. The server response was: 5.7.1 Client was not authenticated

I don't know what to do. Any suggestions ? What am I doing wrong ?

Instead of stating `I don't know what to do` perhaps you could have looked at the `Related` section on this page as well as do a Stackoverflow search for the topic since there are tons of answers as well as working examples.. lack of effort I must say `Etrit` — MethodMan, Aug 05 '13 at 12:22

score 5 · Accepted Answer · answered Aug 05 '13 at 12:18

5

You need to pass the network credential to authenticate the request

client.Credentials = new System.Net.NetworkCredential("yourusername", "yourpassword");

answered Aug 05 '13 at 12:18

Massimiliano Peluso

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2

Extremely over answered topic... – PW Kad Aug 05 '13 at 12:20
1

May also need to [EnableSsl](http://msdn.microsoft.com/en-us/library/system.net.mail.smtpclient.enablessl.aspx) (depending on the smtp server). – Brad Christie Aug 05 '13 at 12:20
2

That does not make it available for Downvote ... – Pranav Aug 05 '13 at 12:21
2

@Etrit:- Please accept this as an answer then ... – Pranav Aug 05 '13 at 12:25
Done. Just needed to wait the countdown to accept an answer :) – Etrit Aug 05 '13 at 12:34

Sending email via C#

1 Answers1