FAILED - (No max-age or expires) - external content

[Fli]

Hello, can anyone please advice if its possible to cache somehow content loaded from external domain which is not under my control?

http://www.webpagetest.org/ reported alot of external content "FAILED - (No max-age or expires)"


Leverage browser caching of static assets: 69/100FAILED - (No max-age or expires) - http://p.skimresources.net/px.gif?ch=2&rn=7.0942746554501355
FAILED - (No max-age or expires) - http://www.adsella.com/marketplace/images/instant_ads/square_125x125.jpg
FAILED - (No max-age or expires) - http://p.skimresources.net/px.gif?ch=1&rn=7.0942746554501355
FAILED - (No max-age or expires) - http://www.adsella.com/marketplace/ServeAd.php?id=3551&key=10685203469766
FAILED - (No max-age or expires) - http://www.adsella.com/marketplace/ServeAd.php?id=3550&key=3529955583030
FAILED - (No max-age or expires) - http://i.skimresources.com/api/?callback=skimwordsSettingsCallback&data=%7B%22instant%22%3A%221%22%2C%22page%22%3A%22 http%3A%2F%2Finternetlifeforum.com%2F%22%2C%22pref %22%3A%22%22%2C%22pubcode%22%3A%2227941X1199565%22 %7D&version=10&js=1
FAILED - (No max-age or expires) - http://r.skimresources.com/api/?callback=skimlinksApplyHandlers&data=%7B%22pubcode%22%3A%2227941X1199565%22%2C%22d omains%22%3A%5B%22bulkseotools.com%22%2C%22virusto tal.com%22%2C%22vbulletin.org%22%2C%22kvchosting.c om%22%2C%22instantcpanelhosting.com%22%2C%22adsell a.com%22%2C%22chat.epips.net%22%5D%2C%22page%22%3A %22http%3A%2F%2Finternetlifeforum.com%2F%22%7D
FAILED - (No max-age or expires) - http://i.skimresources.com/api/
FAILED - (No max-age or expires) - http://t.skimresources.net/api/track.php
FAILED - (No max-age or expires) - http://internetlifeforum.com/cron.php?rand=1398936365
FAILED - (No max-age or expires) - http://i.skimresources.com/api/
FAILED - (No max-age or expires) - http://t.skimresources.net/api/link
FAILED - (No max-age or expires) - http://internetlifeforum.com/
FAILED - (No max-age or expires) - http://downloads.mailchimp.com/js/jquery.form-n-validate.js
FAILED - (No max-age or expires) - http://www.kvchost.com/affiliate/banners/14.jpg
FAILED - (No max-age or expires) - http://www.kvchost.com/affiliate/banners/24.jpg
FAILED - (No max-age or expires) - https://www.kvcwebhost.com/affiliate/banners/24.jpg
FAILED - (No max-age or expires) - https://www.kvcwebhost.com/affiliate/banners/14.jpg
FAILED - (No max-age or expires) - http://cdn-images.mailchimp.com/embedcode/classic-081711.css
FAILED - (No max-age or expires) - http://www.kvcwebhost.com/affiliate/banners//24.jpg
FAILED - (No max-age or expires) - http://internetlifeforum.com/misc.php?show=latestposts&vsacb_resnr=10
FAILED - (No max-age or expires) - http://www.kvcwebhost.com/affiliate/banners//14.jpg
FAILED - (No max-age or expires) - http://internetlifeforum.com/misc.php?show=posters&vsacb_resnr=10
FAILED - (No max-age or expires) - http://internetlifeforum.com/misc.php?show=hottestforums&vsacb_resnr=10
WARNING - (60.0 minutes) - http://s.skimresources.com/js/27941X1199565.skimlinks.js
WARNING - (12.0 hours) - http://www.google-analytics.com/ga.js

WARNING - (3.8 days) - http://plugins.ranktrader.com/trade?url=internetlifeforum.com&type=200x90&style=light