How can I make SMTP authenticated in C#

Question

I create new ASP.NET web application that use SMTP to send message. The problem is the smtp was not authenticated from who send the message.

How can I make SMTP authenticated in my program? does C# have a class that have attribute for enter username and password?

Answer 1

using System.Net; using System.Net.Mail;  using(SmtpClient smtpClient = new SmtpClient()) {     var basicCredential = new NetworkCredential("username", "password");      using(MailMessage message = new MailMessage())     {         MailAddress fromAddress = new MailAddress("[email protected]");           smtpClient.Host = "mail.mydomain.com";         smtpClient.UseDefaultCredentials = false;         smtpClient.Credentials = basicCredential;          message.From = fromAddress;         message.Subject = "your subject";         // Set IsBodyHtml to true means you can send HTML email.         message.IsBodyHtml = true;         message.Body = "<h1>your message body</h1>";         message.To.Add("[email protected]");           try         {             smtpClient.Send(message);         }         catch(Exception ex)         {             //Error, could not send the message             Response.Write(ex.Message);         }     } } 

You may use the above code.