Hi Everybody, First, I hope the question has never been asked ... I am using NGinx as a reverse proxy and load balancing with upstream. This is working perfectly, BUT I have to send a return code "404" when a specific header is returned from proxy. I tried this in my server section : <code> location / { proxy_pass http://myupstream; if ( $upstream_http_myhby knasucre22 - How to...