sending mail

[sojan]

what is wrong in this code, i want to send mail without changing php.ini as in code igniter. how can i do that.

 

  $fd = popen("/usr/sbin/sendmail","w");
  fputs($fd, "To: sojan@abc.com");
  fputs($fd, "From: admin@abc.com");
  fputs($fd, "Subject: Test message from my web site");
  fputs($fd, "X-Mailer: PHP3");
  fputs($fd, "SMTP: 168.5.0.1");
  fputs($fd, "smtp_port: 25");
  fputs($fd, "Testing. ");
  pclose($fd);