I would block the IP with iptables if it were me, and if you have that kind of server level access.

You could also disable xmlrpc. Unfortunately, since 3.5 the admin screen option to disable that feature has been removed. A single line of code should disable it though: add_filter( 'xmlrpc_enabled', '__return_false' ); That might save some overhead from the requests, though it won't eliminate all of it.

Many POST requests to /xmlrpc.php from GoogleBot taking down server?
Apparently there are two types of air conditioning units - IHKR and IHKA - in BMW e39's. I'm curious whether there are different types in e46's and, if so, how do I find out?
