I've just installed and configured Zimbra for the first time (took me three goes but it was worth every second and I learned a lot). Fantastic software, thanks Zimbra people

I used to run an Exim mail server which had an aliases file where I could redirect incoming mail for old, deleted, accounts to other users e.g.:

barry: peter
zoe: John,dave

very useful when one of our tutors left to redirect their incoming mail to one or more of the remaining teaching staff.

I've looked at the Zimbra aliases feature but it doesn't seem to work in the same way. Anyone know of a way to get Zimbra or the Postfix MTA to alias mail as described above?