Problems With contact.php file

<Files *>
Order Deny,Allow
deny from all
allow from 111.111.111.111
</Files>

echo "<input type='submit' name='sendmessage' value='".$locale['406']."' class='button' /></td>\n";

echo "<input type='submit' name='sendmessage' value='".$locale['406']."' class='button' onclick=\"document.getElementById('check').value = 'stopSpam';\" /></td>\n";

$mail->addReplyTo($fromemail, $fromname);

if ($_POST['check'] != 'stopSpam') exit('Spam decected');

<?php
/*-------------------------------------------------------+
| PHPFusion Content Management System
| Copyright (C) PHPFusion Inc
| https://www.php-fusion.co.uk/
+--------------------------------------------------------+
| Filename: contact.php
| Author: PHPFusion Development Team
+--------------------------------------------------------+
| This program is released as free software under the
| Affero GPL license. You can redistribute it and/or
| modify it under the terms of this license which you
| can read by viewing the included agpl.txt or online
| at www.gnu.org/licenses/agpl.html. Removal of this
| copyright header is strictly prohibited without
| written permission from the original author(s).
+--------------------------------------------------------*/
require_once __DIR__."/maincore.php";
require_once THEMES."templates/header.php";
include LOCALE.LOCALESET."contact.php";

add_to_title($locale['global_200'].$locale['400']);

if (isset($_POST['sendmessage'])) {
 $error = "";
 $mailname = isset($_POST['mailname']) ? substr(stripinput(trim($_POST['mailname'])), 0, 50) : "";
 $email = isset($_POST['email']) ? substr(stripinput(trim($_POST['email'])), 0, 100) : "";
 $subject = isset($_POST['subject']) ? substr(str_replace(["\r", "\n", "@"], "", descript(stripslash(trim($_POST['subject'])))), 0, 50) : "";
 $message = isset($_POST['message']) ? descript(stripslash(trim($_POST['message']))) : "";
 if ($mailname == "") {
 $error .= " <span class='alt'>".$locale['420']."</span><br />\n";
 }
 if ($email == "" || !preg_match("/^[-0-9A-Z_\.]{1,50}@([-0-9A-Z_\.]+\.){1,50}([0-9A-Z]){2,4}$/i", $email)) {
 $error .= " <span class='alt'>".$locale['421']."</span><br />\n";
 }
 if ($subject == "") {
 $error .= " <span class='alt'>".$locale['422']."</span><br />\n";
 }
 if ($message == "") {
 $error .= " <span class='alt'>".$locale['423']."</span><br />\n";
 }

 if (!iADMIN) {
 $_CAPTCHA_IS_VALID = FALSE;
 include INCLUDES."captchas/".$settings['captcha']."/captcha_check.php";
 if ($_CAPTCHA_IS_VALID == FALSE) {
 $error .= " <span class='alt'>".$locale['424']."</span><br />\n";
 }
 }

 if (!$error) {
 require_once INCLUDES."sendmail_include.php";
 $template_result = dbquery("
 SELECT template_key, template_active, template_sender_name, template_sender_email
 FROM ".DB_EMAIL_TEMPLATES."
 WHERE template_key='CONTACT'
 LIMIT 1");
 if (dbrows($template_result)) {
 $template_data = dbarray($template_result);
 if ($template_data['template_active'] == "1") {
 if (!sendemail_template("CONTACT", $subject, $message, "", $template_data['template_sender_name'], "", $template_data['template_sender_email'], $mailname, $email)) {
 $error .= " <span class='alt'>".$locale['425']."</span><br />\n";
 }
 } else {
 if (!sendemail($settings['siteusername'], $settings['siteemail'], $mailname, $email, $subject, $message)) {
 $error .= " <span class='alt'>".$locale['425']."</span><br />\n";
 }
 }
 } else {
 if (!sendemail($settings['siteusername'], $settings['siteemail'], $mailname, $email, $subject, $message)) {
 $error .= " <span class='alt'>".$locale['425']."</span><br />\n";
 }
 }
 }
 if ($error) {
 opentable($locale['400']);
 echo "<div style='text-align:center'><br />\n".$locale['442']."<br /><br />\n".$error."<br />\n".$locale['443']."</div><br />\n";
 closetable();
 } else {
 opentable($locale['400']);
 echo "<div style='text-align:center'><br />\n".$locale['440']."<br /><br />\n".$locale['441']."</div><br />\n";
 closetable();
 }
} else {
 opentable($locale['400']);
 echo $locale['401']."<br /><br />\n";
 echo "<form name='userform' method='post' action='".BASEDIR."contact.php'>\n";
 echo "<table cellpadding='0' cellspacing='0' class='center'>\n<tr>\n";
 echo "<td width='100' class='tbl'>".$locale['402']."</td>\n";
 echo "<td class='tbl'><input type='text' name='mailname' maxlength='50' class='textbox' style='width: 200px;' /></td>\n";
 echo "</tr>\n<tr>\n";
 echo "<td width='100' class='tbl'>".$locale['403']."</td>\n";
 echo "<td class='tbl'><input type='text' name='email' maxlength='100' class='textbox' style='width: 200px;' /></td>\n";
 echo "</tr>\n<tr>\n";
 echo "<td width='100' class='tbl'>".$locale['404']."</td>\n";
 echo "<td class='tbl'><input type='text' name='subject' maxlength='50' class='textbox' style='width: 200px;' /></td>\n";
 echo "</tr>\n<tr>\n";
 echo "<td width='100' class='tbl'>".$locale['405']."</td>\n";
 echo "<td class='tbl'><textarea name='message' rows='10' class='textbox' cols='50'></textarea></td>\n";
 echo "</tr>";

 if (!iADMIN) {
 echo "<tr>\n";
 echo "<td width='100' class='tbl'>".$locale['407']."</td>\n";
 echo "<td class='tbl'>";
 include INCLUDES."captchas/".$settings['captcha']."/captcha_display.php";
 if (!isset($_CAPTCHA_HIDE_INPUT) || (isset($_CAPTCHA_HIDE_INPUT) && !$_CAPTCHA_HIDE_INPUT)) {
 echo "</td>\n</tr>\n<tr>";
 echo "<td class='tbl'><label for='captcha_code'>".$locale['408']."</label></td>\n";
 echo "<td class='tbl'>";
 echo "<input type='text' id='captcha_code' name='captcha_code' class='textbox' autocomplete='off' style='width:100px' />";
 }
 echo "</td>\n</tr>";
 }

 echo "<tr>\n";
 echo "<td align='center' colspan='2' class='tbl'>\n";
 echo "<input type='submit' name='sendmessage' value='".$locale['406']."' class='button' /></td>\n";
 echo "</tr>\n</table>\n</form>\n";
 closetable();
}

require_once THEMES."templates/footer.php";