[Dovecot] Preventing IMAP folder deletion?

[Seth Mattinen]

dovecot at corwyn.net wrote:
> 
> 
> Hi!
> 
> I'm running postfix with dovecot using mysql for user accounts, with
> Outlook being used as the IMAP mail client.  I'm using a mail delimiter
> ("+") and mail automatically goes to a Spam folder as part of spam
> filtering with amavisd and spam assassin. It's configured so that
> folders won't automatically create; if the folder isn't there mail
> delivers to the inbox (so that spam doesn't create extra folders).
> 
> the problem I ran into today is that a user deleted the Spam folder.
> While recreating it isn't that hard, is there a way I can prevent them
> from being able to delete specific folders in IMAP?
> 
> In squirrelmail I can create "system" folders that the user can't change
> or delete, but that's client based. Since I don't see that ability in
> Outlook, can I somehow configure dovecot so the user can't delete
> specified folders?
> 

Never tried it personally, but what about an ACL denying the "folder can
 be deleted" attribute?

http://wiki.dovecot.org/ACL

~Seth