==== Required information ====
- iRedMail version:
- Store mail accounts in which backend (LDAP/MySQL/PGSQL):
- Linux/BSD distribution name and version:
- Related log if you're reporting an issue:
==== ==== Required information ====
- iRedMail version: 0.8.3
- Store mail accounts in which backend (LDAP/MySQL/PGSQL): Active Directory
- Linux/BSD distribution name and version: Centos
- Related log if you're reporting an issue:
====
I have created public folders for mailing-list usage using this in my dovecot.conf

namespace {
    type = private
    separator = /
    prefix =
    #location defaults to mail_location.
   # location = maildir:/%Ld/%Ln/Maildir/:INDEX=/%Ld/%Ln/Maildir/
    inbox = yes
}

namespace {
    type = public
    separator = /
    prefix = Public/
    location = maildir:/var/vmail/public
    subscriptions = yes
    inbox = no
    hidden = no
}

I have also used autosubscribe so that all users are subscribed in those public folders. Users can only use Roundcube (no IMAP or POP3). The problem is that users in roundcube can go "Settings" -> "Folders" and unsubscribe and even delete the folders. Is there any way to prevent that?