Mail system gone down.

[eaglelegend]

Hey, my mail code has stopped working, I cant figure out why replys are not sending, the button clicks but nothing happens. please help, it is much appreciated

	case "sview":
	$update = mysql_query("UPDATE `messages` SET status = 'read' WHERE `id`='$id' AND `site`= '$Z'");
	$query = "SELECT * FROM `messages` WHERE `id`='$id' AND `site` = '$Z'";
	$sql = mysql_query($query) or die("MySQL Error in query: ".$query."<br />".mysql_error());
	while($row = mysql_fetch_array($sql))
	{
   		extract($row);
		$subject = (substr($subject,0,3)=="RE:")?$subject:"RE: $subject";
		print "<h2>$subject</h2><p>


		To: <a href=\"pro.php?user=$to\">$to</a><br />
		From: <a href=\"pro.php?user=$from\">$from</a><br />
		Date: $date<br />
		<div class=\"text_box\">
		$body</div>
	}
break;

default:
	$query = "SELECT count(*) as msgs FROM `messages` WHERE `to` = '$u' AND `site` = '$Z' ";
	$sql = mysql_query($query) or die("MySQL Error in query: ".$query."<br />".mysql_error());
	$msg = mysql_fetch_array($sql);
	echo "You have {$msg['msgs']} messages"; 
	echo "<h1>Send Message</h1><p>
		<form action=\"mail.php?action=sendmsg\" method=\"post\">";
	echo "<input type=\"radio\" name=\"type\" value=\"1\" class=\"text_box\" alt=\"Click here if you are sending your message outside this site via email\" title=\"Click here if you are sending your message outside this site via email\"> Email

 

NOTICE: THIS IS ONLY SAMPLE OF MY CODE!!!