Question

Im trying to send email to the user when registering.
But its generating an error “No connection could be made because the target machine actively refused it 127.0.0.1:25”.

Currently I have add this to the web.config

 <system.net> 
    <mailSettings>
      <smtp>
        <network
          host="localhost"
          port="25"
          defaultCredentials="true"
        />
      </smtp>
    </mailSettings>
  </system.net>

Answer 1

As pointed out by Ben Robinson and Ernest Friedman-Hill you need to have SMTP server installed on your local machine. Otherwise you can use any other host.

   <system.net>
    <mailSettings>
      <smtp from="[e-mail] ">
        <network host="smtp.gmail.com" defaultCredentials="false"
      port="587" userName ="[e-mail]" password="yourMailPassword" />
      </smtp>
    </mailSettings>
   </system.net>

I used gmail as a host here.

While using this Don’t forget to enable the SSL

SmtpClient client = new SmtpClient();
client.EnableSsl = true;