# ejabberd The kosmos.org XMPP service is running as an ejabberd cluster on [various machines][1]. JIDs are `username@kosmos.org`, with the service being configured in DNS to use `xmpp.kosmos.org` and MUC on `kosmos.chat`. * [Configuring ejabberd](https://docs.ejabberd.im/admin/configuration) * [XEP compliance tester](https://compliance.conversations.im/server/kosmos.org/) * [ejabberdctl reference](https://docs.ejabberd.im/admin/guide/managing/#ejabberdctl-commands) [1]: https://wiki.kosmos.org/Infrastructure