[Dovecot] Deliver quota-warning via director

Hi there,

I'm using NFS with Dovecot 2.0.20 and would like to deliver a quota warning to the user using the LMTP director. I have configured quota warnings according to http://wiki2.dovecot.org/Quota/Configuration

But it seems that lda delivers the mail directly to the local filesystem and is not using our lmtp director, which prevents NFS mailboxes from getting corrupted.

Is there a way to tell lda to use LMTP or the director and ignore the quota while delivering the notification?

Regards Daniel