Looks like ACL's might work.
- [Dovecot] Shared Folders Stephen Carville
- Re: [Dovecot] Shared Folders Timo Sirainen
- Re: [Dovecot] Shared Folders Stephen Carville
- Re: [Dovecot] Shared Folders Charles Marcus
- Re: [Dovecot] Shared Folders Stephen Carville
- Re: [Dovecot] Shared Folders Stephen Carville
- Re: [Dovecot] Shared Folders Stephen Carville