Problem with mail function

[viraj]

I created a form to send feedback and i get the following error, what does that mean
and how to fix it.

Warning: mail() [function.mail]: "sendmail_from" not set in php.ini or custom "From:" header missing in c:\wamp\www\php website\php and mysql\practice files\chapter 4 - string manipulation and regular expressions\processfeedback.php on line 11

The code is as follows:
<?
$name=$POST['name'];
$email=$POST['email'];
$feedback=$_POST['mailcontent'];
$toaddress="[e-mail]";
$subject="Feedback from web site";
$mailcontent="Customer name: " . $name . "\n"
. "Customer email: " . $email . "\n"
. "Customer comments: \n" . $feedback . "\n";
$fromaddress="[e-mail]";
mail($toaddress, $subject, $mailcontent, $fromaddress);
?>

Thanks in advance

[rincewind456]

It means that you need to set the sendmail_from option in php.ini, look around line 740.

[herve]

Cf : http://fr3.php.net/manual/en/function.mail.php

Extract :

<?php
$to      = '[e-mail]';
$subject = 'the subject';
$message = 'hello';
$headers = 'From: [e-mail]' . "\r\n" .
           'Reply-To: [e-mail]' . "\r\n" .
           'X-Mailer: PHP/' . phpversion();

mail($to, $subject, $message, $headers);
?> 

Look at how the "From:" is passed inside the last argument of the mail() function call,
it's not just an email address.