Our CMS uses permalink, for example this one:
www.kingmagazine.se/artiklar/king-kroner/20120713/10-korthallare
When a user is trying to share this URL by pasting it into the "update status" field on their Facebook homepage, Facebook seems to try fetch a different URL to get the open graph info, as illustrated in this image:
https://i.stack.imgur.com/MSOMx.png
The page fetched seems to be an error message from the site. The image is not relevant to the article specified but rather contained in the footer of all pages.
However the CMS also has internal URL:s, such as this one (for the same article):
www.kingmagazine.se/artiklar/?id=152539
When sharing that one on Facebook, the correct data is fetched, as illustrated here:
https://i.stack.imgur.com/E63qF.png
I have tried digging in our server logs to no avail - it seems like Facebook is requesting the wrong URL and not the complete permalink. I have also tried the Facebook Lint but haven't found any reason.
Has anyone got any ideas?
Sorry for the garbled links but Stackoverflow spam prevention said max 2 links and no images. :(