使用域名时，Nginx返回404找不到错误

我有一个nginx的问题，我的IP地址指向我的网站，但是当我指向我的域到该IP地址，并尝试访问我的网站与我的域名（www.example.com）nginx返回404错误。 这是我的代码。

user www-data; worker_processes 4; worker_rlimit_nofile 100000; pid /run/nginx.pid; events { use epoll; worker_connections 1024; multi_accept on; } http { ## # Basic Settings ## sendfile on; tcp_nopush on; tcp_nodelay on; keepalive_timeout 65; keepalive_requests 200; reset_timedout_connection on; types_hash_max_size 2048; # server_tokens off; # server_names_hash_bucket_size 64; # server_name_in_redirect off; include /etc/nginx/mime.types; default_type application/octet-stream; ## # Logging Settings ## access_log /var/log/nginx/access.log; error_log /var/log/nginx/error.log; ## # Gzip Settings ## #gzip on; gzip_disable "msie6"; gzip_min_length 256; # gzip_vary on; # gzip_proxied any; gzip_comp_level 3; gzip_buffers 16 32k; # gzip_http_version 1.1; ## # nginx-naxsi config ## # Uncomment it if you installed nginx-naxsi ## #include /etc/nginx/naxsi_core.rules; ## # nginx-passenger config ## # Uncomment it if you installed nginx-passenger ## #passenger_root /usr; #passenger_ruby /usr/bin/ruby; ## # Virtual Host Configs ## server{ listen 80; server_name vidzapp.com www.vidzapp.com; client_max_body_size 500m; location /{ add_header 'Access-Control-Allow-Origin' "*"; add_header 'Access-Control-Allow-Credentials' 'true'; add_header 'Access-Control-Allow-Headers' 'Content-Type,accept,x-wsse,origin'; add_header 'Access-Control-Allow-Methods' 'GET, POST, OPTIONS, PUT, DELETE'; root /var/www; index index.php; } location ~ \.php$ { root /var/www/; fastcgi_split_path_info ^(.+\.php)(/.+)$; # NOTE: You should have "cgi.fix_pathinfo = 0;" in php.ini # # With php5-cgi alone: #fastcgi_pass 127.0.0.1:9000; # With php5-fpm: fastcgi_pass unix:/var/run/php5-fpm.sock; fastcgi_index index.php; include fastcgi_params; } # deny access to .htaccess files, if Apache's document root # concurs with nginx's one # location ~ /\.ht { deny all; } } } 

  root /var/www/egaffar.com/datazone; index index.php index.html index.htm; # Make site accessible from http://localhost/ server_name DOMAIN.com www.DOMAIN.com *.DOMAIN.com; location / { # First attempt to serve request as file, then