Sending email fails

[mwenyenia07]

i am using mail() function to send email with php. the following is the sending script.
<?php
$to = "[e-mail]";
$subject = "Contact Us";
$email = "bonjour" ;
$message = "jee tres bien" ;
$headers = "Billing information";
$sent = mail($to, $subject, $message, $headers) ; ?>
it displays a success message but when i check my mail box,there is no new mail.what else can i add to make it run? am using ubuntu version 9.04

[digwnews]

Did you install a mail server?

And check your spam folder.

[mwenyenia07]

yes. am using sendmail in /usr/sbin/sendmail. i don't know whether there are any configuration i need to make like the case in windows where you edit the http.conf and php.ini files. my http.conf is empty in ubuntu. please help.

[manojcbit]

check whether your server supports Emails or not? Check this in phpinfo(). in that page, search for IMAP. if it is enabled, mail will be sent successfully.