We have a jira server behind proxy instance. Also we have a direct connect to jira, defined in the server.xml.
When I'm trying to configure an authentication (incoming and outgoing tabs) for an application link (an old or a new one) through the proxy instance, I'm getting an error like on a screenshot.
But when I'm trying to do the same through a direct connector, everything works.
Looks like the same issue was asked on forum, but nevertheless. Any ideas?