[Dovecot] Acl Groups

Hi all!

I have a corpus of virtual users ( user1@domain.tld , user2@domain.tld, user3@domain.tld,..., usern@domain.tld ... ) authenticated against Active Directory.

Is it possible to group some users (virtual) and give appropriate ACLs on a shared imap public folder using an ACL vfile?

thanks in advance Dimitrios