Hello there-

I am using a standard nginx config for proxying to mongrel for rails apps. I have this for error pages:

error_page 500 502 503 504 /50x.html; location = /50x.html { root html; }

But when my backend mongrels are down nginx always returns a 404 instead of a 500x error. Do I need to catch the 404 from proxy going down and show my own error? Or is there something I am missing. Do all failed proxy requests return 404 instead of 502 or 503?