I found this in the mailing list archive:
http://lists.andrew.cmu.edu/pipermail/info-cyrus/2009-November/032078.html
However, there were no answers. John, did you figure it out? We seem
to have run into sth similar: we have two users the quotas of whom
can't be changed. Nor shown using ima
What causes mailbox reservations and how do you clear them without
server restarts?
I'm running through re-populating our cluster in advance of a go-live
next week and I'm finding that about one in every hundred or so return
"Mailbox is currently reserved" when trying to adjust quotas or create
