Since yesterday the UPM is telling me 'The Atlassian Marketplace server is not reachable.' I have not changed anything on our network, and I am able to wget and ping plugins.atlassian.com from the server console.
There is no proxy involved.
Hope someone can help,I want to update Jira this weekend...
so long
Thomas
UPDATE: The problem only exists in the "Manage Plugins" Tab - "Find New Plugins" works just fine!