I have two or three co-workers that share the same problem:
They use thunderbird w/ ligntning. Whenever they create an appointment and invite others, my email address is displayed as sender, not theirs. This means I get lots of "Yeah I'll be there" and "Sorry, no time" mails for appointments that I haven't created - and the people making these appointments wonder why they don't get any response.
First I thought it would be a local problem, somehow related to thunderbird, because when creating an appointment from the web interface and inviting others, it works as expected.
But I couldn't find any setting in TB where you could put a different sender address for the calendar. I tried deleting and recreating the calendar in Lightning, at this point I noticed that we're using CalDAV when opening calendars in Lightning. I remembered that the whole DAV thing is based on port 80, so I tried opening the calendar URL in a webbrowser, and now things get interesting. The user name of an affected co-worker is petersen, so I went to http://zimbraserver.ourdomain.de/dav/petersen/Calendar. My username is klostermann, that's an admin account btw.
This is what I got in the browser:
This leads to two questions:
Authenticated user: email@example.com
Current date: Mon Jan 25 13:46:50 CET 2010
Date: Mon Jun 08 11:26:16 CEST 2009
Owner account Id: 31dd8efd-824f-4dd9-b1e1-4af3161633c1
Owner account name: firstname.lastname@example.org
1. What the hell? (as in: how can this happen?)
2. Where and how can I change this "ownership" back to the account the calendar belongs to and is stored in?