[Dovecot] Dovecot ACLs

Running Dovecot 1.1.8 using Virtual users, multiple domains.

My file structure is /var/spool/mail/<domain>/<user>/Maildir/ (cur, new,tmp,.Spam)

What I'd like to do is add an ACL such that all users can read/delete/move mail that's in the spam folder, but not delete it. Am I going to have to create an entry for every single user, or is there a way to do it once, for all .Spam folders?

I've read through http://wiki.dovecot.org/ACL and can't quite get this as the last step.

Thanks

rick

Rick Steeves http://www.sinister.net

"The journey is the destination"