Reverse proxy setup problem

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I have created a reverse proxy for 2 web servers both are running about 10
sites each, they use to be on seperate external IP's but now need to be
behind the same one.

Using Nginx I setup a reverse proxy on a seperate VM, Its seems to work but
one site is refusing to go to the correct server.

I have nothing in /conf.d/ I am using /sites-available and /sites-enabled,
each site has its own config file. Im using proxy_pass with the servers IP
address. What am I doing wrong?

server {
   listen 10.0.0.125:80;
   server_name .example.com;
     location / {
      proxy_pass http://10.0.0.110/;
      proxy_redirect off;
      proxy_set_header Host $host;
      proxy_set_header X-Real-IP $remote_addr;
      proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
      proxy_max_temp_file_size 0;
      client_max_body_size 10m;
      client_body_buffer_size 128k;
      proxy_connect_timeout 90;
      proxy_send_timeout 90;
      proxy_read_timeout 90;
      proxy_buffer_size 4k;
      proxy_buffers 4 32k;
      proxy_busy_buffers_size 64k;
      proxy_temp_file_write_size 64k;
   }
}

Posted at Nginx Forum: http://forum.nginx.org/read.php?2,259982,259982#msg-259982