First off, how does the mailbox appear to the user on the old server while it is in the process of moving from one server to the next? Can they see it in read-only mode, or does it disappear entirely, or is there a chance for data corruption if they make changes to it while the mailbox is in transit? Should all of the ACLs be cleared on the old server before the move starts, then restored when the move is finished, or is that taken care of? Also, what happens if delivery to the mailbox is attempted via lmtp during the move? Is it rejected with a "Mailbox does not exist?" or does it fall into some kind of pit?
Secondly, is there a way to get cyradm (or alternately, Cyrus::IMAP::Admin) to return the backend server where a mailbox is located? Or is there some query you could send to the MUPDATE server to find that information? In other words, is there some way we can automate mailbox administration so that the administrator doesn't have to go hunting around trying to figure out which server a mailbox is on in order to change ACLs on it?
Thanks, Michael
