Enable Instant Messaging feature on Zimbra

By default, IM feature is not enabled on Zimbra systems after upgrading. You can use these commands to enable it:

su - zimbra
zmprov -l -v mcf zimbraXMPPEnabled TRUE
zmprov -v mc default zimbraFeatureIMEnabled TRUE
zmprov -v mc default zimbraFeatureInstantNotify TRUE
zmcontrol stop
zmcontrol start

Obviously set the COS to the one you use if it’s not the default.

Good luck! 🙂