Cyrus admin access to user mailboxes

[jools at oss4all.plus.com]

Hi All,

Just a quick question regarding accessing mailboxes via admin accounts. I
have Cyrus configured with 4 admins named in the imapd.conf file but I
can't find how to access users accounts which we have to do under certain
circumstances. On exchange you'd log in with domain/user/mailboxowner to
gain access. What's the best method of doing with Cyrus?

Thanks in advance,

Jools