The Chat issues may produce errors in the log such as StdErrChannel.cpp: Instant Messaging [external]: xception in thread; java.lang.OutOfMemoryError: unable to create new native thread; KThreadPool.cpp: Cannot create new worker thread: (11) Resource temporarily unavailable
folder_manager.cpp: Cannot start folder cache thread. System status: (11) Resource temporarily unavailable; HealthMonitor.cpp: Problem has occurred in the 'XMPP Server' component. 5 failures have been found. Component is paused for another 5 minutes.
In such cases, the Chat feature should be reset from the server-side.
If the Chat feature is not used regularly:
Navigate to the Kerio Connect Installation Folder and edit the file
OS Path Mac OSX
mailserver.cfg, set the following:
If the Chat feature is needed on a regular basis:
Follow the instructions from Resolving XMPP Server Errors in Kerio Connect
It's recommended to enable the chat feature using a configuration file and not from Webadmin directly.