I am a Zimbra user who started out with 4.5 and I've recently moved to 5.0. I also used to use a Windows Mobile with the Zimbra Mobile syncing, but I've mvoed away from that. I use Zimbra in a Mac (Leopard) environment, using the Zimbra Sync options to keep my iPhone, Mac, and Zimbra all in sync for calendaring and contacts. The reason I mention all this is that I'm having an odd situation and I can't figure out if the issue is within Zimbra, or related to some of the interaction with these other things.
Right now, any time someone send me an invitation, it is automatically added to my calendar, whether it's another zimbra user, or an Exchange user. This has worked well in the past, but I need to change this. Unfortunately, I can't seem to find anything in Zimbra that is making this happen, but even if I turn off syncing on my mac, it still happens. I'm wondering if there is some setting related to my now non-existent ActiveSync config that would cause this?