MAG-1.9.3.0.patch

--- /dev/null
+++ ../library/Zend/Validate/Hostname.php
@@ -2188,7 +2188,9 @@
                     $this->_tld = $matches[1];
                     if ($this->_options['tld']) {
                         if (!in_array(strtolower($this->_tld), $this->_validTlds)
-                            && !in_array($this->_tld, $this->_validTlds)) {
+                            && !in_array($this->_tld, $this->_validTlds)
+                            && !$this->checkDnsRecords($this->_value)
+                        ) {
                             $this->_error(self::UNKNOWN_TLD);
                             $status = false;
                             break;
@@ -2422,5 +2424,31 @@
         }
 
         return implode('', $decoded);
+    }
+
+    /**
+     * Returns true if any DNS records corresponding to a given Internet host are found.
+     * Returns false if no DNS records were found or if an error occurred.
+     * Checks A-Record.
+     *
+     * @param string $hostName
+     *
+     * @return bool
+     */
+    protected function checkDnsRecords($hostName)
+    {
+        if (function_exists('idn_to_ascii')) {
+            if (defined('IDNA_NONTRANSITIONAL_TO_ASCII') && defined('INTL_IDNA_VARIANT_UTS46')) {
+                $toAscii = idn_to_ascii($hostName, IDNA_NONTRANSITIONAL_TO_ASCII, INTL_IDNA_VARIANT_UTS46);
+            } else {
+                $toAscii = idn_to_ascii($hostName);
+            }
+            $result = checkdnsrr($toAscii, 'A');
+        } else {
+            $idn = new Net_IDNA2();
+            $result = checkdnsrr($idn->encode($hostName), 'A');
+        }
+
+        return $result;
     }
 }