http {
  index index.html;
 
  server {
    server_name www.domain1.com;
    access_log logs/domain1.access.log main;
 
    root /var/www/domain1.com/htdocs;
  }
 
  server {
    server_name www.domain2.com;
    access_log  logs/domain2.access.log main;
 
    root /var/www/domain2.com/htdocs;
  }
}

http {
  index index.html;
 
  server {
    listen 80 default;
    server_name _;
    access_log logs/default.access.log main;
 
    server_name_in_redirect off;
 
    root  /var/www/default/htdocs;
  }
}

server {
  # Replace this port with the right one for your requirements
  listen 80 [default|default_server];  #could also be 1.2.3.4:80
 
  # Multiple hostnames separated by spaces.  Replace these as well.
  server_name star.yourdomain.com *.yourdomain.com; # Alternately: _
 
  root /PATH/TO/WEBROOT/$host;
 
  error_page 404 errors/404.html;
  access_log logs/star.yourdomain.com.access.log;
 
  index index.php index.html index.htm;
 
  # serve static files directly
  location ~* \.(jpg|jpeg|gif|css|png|js|ico|html)$ {
    access_log off;
    expires max;
  }
 
  location ~ \.php$ {
    include fastcgi_params;
    fastcgi_intercept_errors on;
    # By all means use a different server for the fcgi processes if you need to
    fastcgi_pass   127.0.0.1:YOURFCGIPORTHERE;
  }
 
  location ~ /\.ht {
    deny  all;
  }
}