Ok I am not really sure why you are seeing a 503 Status Response, but I checked your site remotely using the BPS Pro Website Headers Pro-Tool and I am seeing a 200 OK Status Response so that is of course the most important thing – means everything is actually good/no actual problems with this website. When I check your site remotely with BPS Pro XML-RPC Exploit Checker Pro-Tool I am seeing
Yes, the WordPress xmlrpc.php file is protected and is NOT exploitable.
and also a 404 Status Response and not a 503 Status Response, which would mean the xmlrpc.php file has been deleted on this website (see following check below). One thing that seems a little odd is the URL is not the root URL of your site in the returned Headers and is instead the /german-shepards/ folder. I assume this is some sort of redirect or some sort of folder structure issue. In any case everything looks good/fine.
HTTP Status Code: 200 OK Headers: Array ( [date] => Thu, 18 Sep 2014 18:32:49 GMT [server] => Apache/2 [x-powered-by] => PHP/5.3.28 [vary] => Accept-Encoding,Cookie,User-Agent [cache-control] => max-age=3, must-revalidate [wp-super-cache] => Served supercache file from PHP [content-encoding] => gzip [content-length] => 9009 [connection] => close [content-type] => text/html; charset=UTF-8 )
Remote check for website: xxxx-land
HTTP Status Code: 404 Not Found Headers: Array ( [date] => Thu, 18 Sep 2014 18:36:33 GMT [server] => Apache/2 [x-powered-by] => PHP/5.3.28 [vary] => Accept-Encoding,Cookie,User-Agent [set-cookie] => wfvt_1508155421=541b26315d69d; expires=Thu, 18-Sep-2014 19:06:33 GMT; path=/; httponly [x-pingback] => http://xxxx-land.com/german-shepherds/xmlrpc.php [expires] => Wed, 11 Jan 1984 05:00:00 GMT [cache-control] => no-cache, must-revalidate, max-age=0 [pragma] => no-cache [content-encoding] => gzip [content-length] => 6133 [connection] => close [content-type] => text/html; charset=UTF-8 )