You are going to have to give us a bit more info on your setup though.
So some proper logs. And why you think this is bad.
Have you looked up the IP?
dig -x 66.249.93.211
211.93.249.66.in-addr.arpa. 43200 IN PTR google-proxy-66-249-93-211.google.com.
I suspect someone is using a Google Proxy to disguise attempts to use your server. It quite possibly it isn't Google itself. Again, check your logs and look at what a Google spider connection looks like. Have a look at what a Google proxy does.
You need to show some proper logs on the connection attempts. Just wildly guessing at stuff won't get it fixed.
You need to be organised & methodical.