I recently setup iptables on my server and ever since face problems when trying to update PIWIK to 2.14.
The error message is
curl_exec: couldn't connect to host. Hostname requested was: builds.piwik.org
while I can access
from the command line.
Also - the update via the http connection does work, over the https connection fails.
So I suppose it is more a problem with the secure connection.
Help would be really appriciated.