Ok. Looks like this one _may_ fulfill our calendering needs. Testing required.

[Bruno Wolff III]

On Mon, Oct 19, 2009 at 08:31:15 -0500,
  Mike McGrath <mmcgrath at redhat.com> wrote:
> On Sun, 18 Oct 2009, jose manimala wrote:
> 
> > did you have time to look at zimbra community edition?
> >
> 
> Actually this might not be a bad idea.  I wonder how hard it is to disable
> the email portion :)

It's less funny than you'd think. At work we use Zimbra and if you forward
your email (without keeping a copy) the built in calendaring stuff doesn't
work very well. You have to use the ics attachment (for the meeting invite
or update) in the forwarded email in a tool to store the message in their
calendar system. I don't think we (my work) ever asked them to fix this,
because so far very people both forward their email and care about calendar
invites. So it might not really be a hard thing to fix.