diff --git a/src/SitemapParser.php b/src/SitemapParser.php
index 6118d2f..cb45e79 100644
--- a/src/SitemapParser.php
+++ b/src/SitemapParser.php
@@ -217,7 +217,9 @@ protected function getContent()
             $res = $client->request('GET', $this->currentURL, $this->config['guzzle']);
             return $res->getBody();
         } catch (GuzzleHttp\Exception\TransferException $e) {
-            throw new SitemapParserException($e->getMessage());
+            if (stripos($e->getMessage(), 'cURL error 6:') === false && $e->getCode() != 404) {
+                throw new SitemapParserException($e->getMessage());
+            }
         }
     }