WPMU Dashboard plugin not loading - fsock curl message!

Message: "Is php on my server properly configured to be able to contact https://premium.wpmudev.org/wdp-un.php with a GET HTTP request via fsockopen or CURL?"
Link: http://www.hout-atelier.nl/wp-admin/admin.php?page=wpmudev&set_apikey=128dc18048b93eafba2bb07dfb47aaa80241b9b5
Hope it does show :wink:

Possible solution:
According to my service desk I have to redirect the include, something like this.

http://include.MyHostingDomain.nl/include.php?url=http://url.naar.de.include

But in what file? admin.php... do not think so.
/includes/admin.php... maybe but where?

I feel kind of lost on this one :wink: All pointers are welcome, thanks