Email not sending

[eluser]RedIgniter[/eluser]

Code:

$this->email->to($email);
$this->email->from('kayfer.com');
$this->email->subject('kayfer.com | Account Activation');
$this->email->message($message);
$this->email->send();

this script doesn't send the e-mail unless I change both "to" and "from" to $email, which in case becomes the same e-mail, and whenever I receive the e-mail send by the script it shows that the e-mail was sent by me to me. Please help me figure out this bug or error by me, thanks in advance.