<iq xmlns="jabber:client" to="conference.domain.es" type="set" id="2570:sendIQ" from="kpy67onezk7w4s4i@domain.es/kpy67onezk7w4s4i">
<colibri xmlns="urn:xmpp:rayo:colibri:1" action="offer" muc="test@conference.domain.es"></colibri>
</iq>
This message is wrong. It should be sent to jitsi-videobridge.domanin.es and not conference.domain.es
Are you sure you are editing the correct config.js file?