Why is webpagetest.org showing an no max-age or expire alert for the domain?

[zibuyule]

Hi,


Here's the link

https://www.webpagetest.org/performance_...ic_content

Quote:FAILED - (No max-age or expires) - https://res.ebdcdn.com/static/images/but...466057.png
FAILED - (No max-age or expires) - https://res.ebdcdn.com/upload/banner/201...00x400.jpg
FAILED - (No max-age or expires) - https://res.ebdcdn.com/upload/banner/201...00x400.jpg

Current rules:

Code:

location /static/ {
        expires 1d;
        alias /sites/www.eyebuydirect.com/static;
    }


    location /upload/ {
        alias /sites/res.ebdcdn.com/upload/;
         expires 1d;
    }

When I check the link(https://res.ebdcdn.com/static/images/but...466057.png) with Google Chrome, I see it show: Cache-Control: max-age = 86400.

Colud you tell me what is your check rule? Why I am failing?