--- typo3-6.1.8/typo3/sysext/linkvalidator/Classes/Linktype/ExternalLinktype.php	2014-04-24 08:36:34.397185907 +0200
+++ typo3-6.1.8-STAGE/typo3/sysext/linkvalidator/Classes/Linktype/ExternalLinktype.php	2014-04-24 09:46:51.634019397 +0200
@@ -86,7 +86,7 @@
 			/** @var $response \HTTP_Request2_Response */
 			$response = $request->send();
 			// HEAD was not allowed, now trying GET
-			if (isset($response) && $response->getStatus() === 405) {
+			if (isset($response) && $response->getStatus() >= 400) {
 				$request->setMethod('GET');
 				$request->setHeader('Range', 'bytes = 0 - 4048');
 				/** @var $response \HTTP_Request2_Response */