re-name cyrus IMAP mailbox

[brian]

I've set up an IMAP mailbox -- foo at domain.com -- for a small 
organisation i do some work for. The account uses a particular 
employee's name. I've also set up some aliases (using Postfix) which 
point to various employees' personal mail accounts (gmail, etc.) for the 
org's various general addresses (eg. info@). Because most of the people 
involved are not in a central office, they preferred to just have the 
mails re-directed to their normal webmail accts.

But i didn't realise that the personal acct. was being used as a general 
acct. and now that person has stopped working for the organisation 
regularly, and just does a bit of work from home. What they've done is 
to keep the foo at domain.com on a shared machine at the office and i'd 
like to switch things a bit.

Basically, i want to switch foo at domain.com to point to this person's 
personal mail address in virtual-alias-maps (this part i can do, and 
this query isn't about that) and to point an existing address -- 
info at domain.com -- (that currently points to a gmail acct.) to the 
mailbox on the server for foo at domain.com.

Does this make any sense?

The reason i want to do this is that there's no gaurantee that this 
person will continue indefinetely with the organisation, and there are 
no personal msgs in this mailbox. It is used on the sole, shared box by 
whomever happens to be working in the office. So, this is just a 
housekeeping issue.

To wit: i'd prefer to have the info@ address point to the existing foo@ 
mailbox on the server (and change foo@ to an alias off-site). How can i 
change this?

My apologies if this is unclear.

brian