mail not working

[Anon]

Hi all,

I'm getting the following script error:
Warning: Server Error in c:......\sitecookies.php on line 23

The code looks like this:
<?
if (isset($jhsDesiree)){
//cookie is set; write a log message
$logFile=sprintf("c:......\visitors.log");
$fp=fopen($logFile,"a");
$logData=sprintf("%s: %s, %s [%s]\n",date("D, m/d/y H:i:s"),$jhsDesiree,$pageName,$pageTitle);
fwrite($fp,$logData);
fclose($fp);

$visitor=sprintf("[%s] visited [%s]!",$jhsDesiree,$pageTitle);
$logData=sprintf("%s [%s]\n",$pageName,$pageTitle);
//mail recipient, subject, message, from
mail("[e-mail]",$visitor,$logData,"From: [e-mail]");
.........

Line 23 happens to be the mail call... What do you think is the problem? Help..

Thanks,
Jorge
[e-mail]