How to disable auto redirect to visual host?

server {
server_name www.clickzeed.com;
listen 80;
server_name_in_redirect off;
root /home/wwwroot/clickzeed;
}

but i not set anything about www.test.com

when i access www.test.com in visual host it auto redirect to t
/home/wwwroot/clickzeed ?

and how ro config to access ip different doc root not auto ?

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