hi i try to setup akamai cdn i upload all my pictures to CDN server and all pictures point out from my website to CDN everything allright but they let me put upto 3 days ttl time of images, when i go www.webpagetest.org the site always warning that because is not 30days the address something like http://www.cdntechnologies.com/adsa.34a/mypicture.png i want this picture expire time to be 30days one of my friend told me can't override because you dont hold images others says you can but dont know how to do my conf something like


if ($myrewrite = "AB")
{
rewrite /(.+)(style|lightbox)\.css$ /$2.css last;
rewrite /(.*)(userdata|install|addon|cron\/)(.*)$ /$2$3 last;
rewrite /(.*)(js\/)(.*)$ /$2$3$4 last;
rewrite ^/(.*)(index\.php)(\/?)(.*)$ /index.php?page=index/$4 last;
rewrite /(.*)(images\/)(.*)(\.)(gif|jpe?g|png|ico)$ /$2$3$4$5 last;
rewrite ^/(.*)$ /index.php?page=$1 last;

}


location ~ /\.ht { deny all; }
location ~ /(userdata|images)/ {
gzip on;
gzip_min_length 512;
gzip_types application/xml text/css application/x-javascript text/javascript;
gzip_proxied any;
gzip_http_version 1.0;
root $home_dir/www/;
access_log off;
expires 30d;
}


thanks in advance