So, a few days ago I had a chat with an AirVPN member on XMPP and he/she remarked that it was not possible to reach other XMPP servers. It was tried to show the XMPP rooms at conference.riseup.net for example. It left us wondering whether AirVPN's XMPP server is indeed federated.
I understand that Riseup might simply not send out the room list, given their ideology. So to rule this out I opened a XMPP server directory and cherry-picked some servers like jabber.at and jabber.de. Checking their status first, none of them showed me a room list.
As everyone who has a Riseup account also has access to the Riseup XMPP server I tried to contact my Riseup account, following their "guide". The result is "remote server not found". This might indicate the server is not federated or there is a problem with federation, but at least that a connection issue to other servers persists.
Did someone test this out as well? Were you successful?
And is it possible to get a definite answer on the federation thing?
Tests were done using Psi, the member used Pidgin.