Sending Email Using Asp.Net with C#

 Here below is my code in web.config. I used the tutorial i found on ASP.Net videos

 <appSettings>
    <add key="fromEmailAddress" value="boyfunky4all@yahoo.com"/>
  </appSettings>
 <system.net>
    <mailSettings>
      <smtp>
        <network host="192.168.1.100"/>
      </smtp>
    </mailSettings>
  </system.net>
Also is my C# code 
  MailMessage message = new MailMessage();
                   message.From = new MailAddress(ConfigurationSettings.AppSettings["fromEmailAddress"]);
            &nb ...