Using this link:
Thunderbird & Lightning - Zimbra :: Wiki
ZCS = 4.5.11. Latest versions of tbird & lightning.
Issue: I create an event with a reminder. Time comes and nothing happens (with TBird up and running). I check the Event, and the reminder is set to OFF?
No clue why that happens. I go into Zimbra using the web interface, and verify that I have reminders enabled - they are - default - 15 minutes. When I open the zimbra webmail I get the reminder.
So the reminder works, but for whatever reason does not work in TBird/Lightning. I tried using reminderfox for TBird - same thing happened - no reminder in TBird.
Any help appreciated,