Currently, the yax.im service is experiencing connectivity problems (“remote-server-not-found” or “connection-timeout” on server-to-server links, “Unable to resolve yax.im” on clients) due to a DNS problem.
To support DNSSEC, we are moving the yax.im and yaxim.org domains to a different set of nameservers. It looks like the old nameservers for yax.im stopped resolving the domain before the 72h transition period was over; a support ticked has been opened for this. Please bear with us (or flush your resolver cache) until the issue has been fixed.