Sending Mail Failure using {System.Net.Mail.SmtpException: Authentication failed.}

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HI guys
I am using

C#

System.Net.Mail;

to send mails in windows application .
all my credentials are right but i am getting "Authentication failed" Error message..

I have tried a lot but it didn't worked .. Can anyone Help me pls

this is the error message i am getting in depth...

<br />
{System.Net.Mail.SmtpException: Authentication failed.<br />
   at System.Net.Mail.SmtpConnection.GetConnection(ServicePoint servicePoint)<br />
   at System.Net.Mail.SmtpTransport.GetConnection(ServicePoint servicePoint)<br />
   at System.Net.Mail.SmtpClient.GetConnection()<br />
   at System.Net.Mail.SmtpClient.Send(MailMessage message)

here is the code:

C#

SmtpClient client = new SmtpClient();
                MailMessage msg = new MailMessage();
               
                client.DeliveryMethod = SmtpDeliveryMethod.Network;
                client.EnableSsl = false;
                client.Host =  "mail.xx.com";
                client.Port =  25;

                System.Net.NetworkCredential credentials = new System.Net.NetworkCredential("username@xx.com", "pwd");
                client.UseDefaultCredentials = false;
                client.Credentials = credentials;
                msg.From = new MailAddress("ams@xx.com",System.Text.Encoding.UTF8);
                msg.To.Add(xx@gmail.com);
                msg.Subject = Subject;
                msg.SubjectEncoding = System.Text.Encoding.UTF8;
                msg.Priority = MailPriority.High;
                msg.Body = Body;
                msg.BodyEncoding = System.Text.Encoding.UTF8;
                msg.IsBodyHtml = true;

                msg.DeliveryNotificationOptions = DeliveryNotificationOptions.OnFailure;
                client.Send(msg);

Thanks In advance

[Edit]Code block added[/Edit]

Posted 27-Oct-12 0:16am

Hari Chandra Prasad Ravuri

Updated 27-Oct-12 5:20am

Thomas Daniels

v3

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kk2014 27-Oct-12 6:21am

hi,
Please check username and password you are using for the same...

Hari Chandra Prasad Ravuri 27-Oct-12 6:27am

hello kkakadiya

All credentials are correct sir .but still i am getting that error

xErvender 27-Oct-12 10:15am

can you post the code?

Hari Chandra Prasad Ravuri 27-Oct-12 11:18am

ok i have posted the code pls check it

2 solutions

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OriginalGriff · Accepted Answer · 2012-10-27T00:52:00

Solution 1

Without your code to check how you are doing it, we can't rally help much.
However, this works: Sending an Email in C# with or without attachments: generic routine.[^] so it might be worth checking how you do it against that.

Posted 27-Oct-12 0:52am

OriginalGriff

Anele Ngqandu · Accepted Answer · 2012-10-27T06:33:00

Hi

C#

MailMessage message = new MailMessage();

message.From = new MailAddress("userid@yahoo.com");
message.To.Add(new MailAddress("ngqandu.anele@gmail.com"));
message.Subject = subject.Text;
message.Body = body.Text;

SmtpClient client = new SmtpClient();
client.Credentials = new System.Net.NetworkCredential ("userid@yahoo.com", "password");

                client.Port = 587;
                client.Host = "smtp.mail.yahoo.com";
                client.EnableSsl = false;
                try
                {
                    client.Send(message);
                }
                catch (Exception ex)
                {
MessageBox.Show
            (ex.Message,"Information",MessageBoxButton.OK,MessageBoxImage.Information);
                }