Server's IP binding another already exist for the record of web pages (can normal visit, is the input domain can access to the site) of the secondary domain name, but can't access,
Server is nginx, conf Settings are as follows:

 
Server {
Linsten 80; 
Server_name ceshi.xxx.com; 
} 

If I set the port to the other, such as 2323 can access to the web page,
To solve the bosses, there was a problem with this is which step?