programmatically send email to outlook 2010 from an application C#

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C#3.0

C#

Im trying to send email to an account in c# programmtically.It gives no errors but finally the mail is no received when i check the inbox;

System.Net.Mail.MailMessage mail = new System.Net.Mail.MailMessage();
                                   mail.To.Add("hari.prasad@fnu.ac.fj");
                                   mail.Subject = "Put a subject here";
                                   mail.From = new System.Net.Mail.MailAddress("hari.prasad@fnu.ac.fj");
                                   mail.Body = "Put your message here";
                                   System.Net.Mail.SmtpClient smtp = new System.Net.Mail.SmtpClient("mail.fnu.local");
                                   smtp.Send(mail);

any ideas as to why is not working out or what do i need to improve to get it working

Thanks