[Dovecot] autocreate mailbox but no sub folders

Hello,

We have been using lda_mailbox_autocreate to avoid to intialize empty mailboxes upon account creations. This does the job allright except that dovecot-lda is also allowed to autocreate sub folders which is a problem when using addresses extensions (adress+folder@domain.tld). It's easy for a malicious user to flood a mailbox with tons of subfolders.

Is there a way to tell dovecot-lda it can only create the initial mailbox and maybe some special folders but nothing else?

Thanks,

Arnaud

-- Arnaud Abélard jabber: arnaud.abelard@univ-nantes.fr / twitter: ArnY Administrateur Système DSI Université de Nantes