The new app PLUCS in the Univention App Center provides you with a
Jabber/XMPP daemon for instant messaging with domain integration via
UCS.
PLUCS provides an integration between the Jabber server, the directory
and the UCS management system. As soon as it is installed, further XMPP
domains, which are directly activated at the user, can be optionally
configured on the server. In addition, existing groups can be converted
into XMPP groups, which will then appear in the contact list of the
Jabber client.
An overview of all available apps can be found in the app catalogue at: https://www.univention.de/en/products/ucs/app-catalogue/