nginx as reverse proxy for runining apache

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http://stackoverflow.com – i have some trouble configuring nginx as reverse proxy. it is good to say i have a vps with kloxo and webmin installed and running multiple domains on my vps. i have installed nginx via REPEL and YUM. and this is my /etc/nginx/nginx.conf file pastebin.com/2yCndm6B i change apache port to 8080 and restart service for making changes and start nginx and there is some problem. when i try reaching every domains on my centos vps i face to APACHE START PAGE (WELCOME PAGE) and when i enter my vps ip in browser like x.x.x.x i face to NGINX START PAGE (WELCOME PAGE) i want nginx to serve my static f (HowTos)