Ubuntu系统VPS下Nginx配置多域名失败，是否是配置的原因？ 配置报错 

系统环境Ubuntu 14.04 x86。
我之前是完全按照VPS-Ubuntu中文这篇文章的方法来从头配置Nginx主机，可是当我在"/etc/nginx/sites-enabled/"目录下放入另外一个域名的信息的时候，都无法配置成功，使用“service nginx restart”重启Nginx服务的时候也都是失败(Fail)……
VPS上“/etc/nginx/sites-enabled/”目录下有“default”和“*.xxx.com”两个配置文件，代码分别如下：
default：

server { listen 80 default_server; listen [::]:80 default_server ipv6only=on;

root /var/www; index index.html index.htm index.php;

server_name ...(主机所在IP地址);

location / { # First attempt to serve request as file, then # as directory, then fall back to displaying a 404. try_files $uri $uri/ =404; # Uncomment to enable naxsi on this location # include /etc/nginx/naxsi.rules if (!-e $request_filename) { rewrite ^/(.+)$ /index.php last; } }

location ~ .php$ { include /etc/nginx/fastcgi_params; fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name; fastcgi_pass 127.0.0.1:9000; } }

另外一个配置文件如下

server   {
   listen       80;
   server_name *.xxx.com;
   index index.html index.htm index.php;
   root  /var/www/*/;
   location ~ \.php$ {
      include /etc/nginx/fastcgi_params;
      fastcgi_param  SCRIPT_FILENAME    $document_root$fastcgi_script_name;
      fastcgi_pass  127.0.0.1:9000;
      }
   }