[Dovecot] Deliver and file system quota

Hi,

what is the quota plugin for deliver supposed to do when using fs quota?

With IMAP, and not using noenforcing, a user that is over Soft limit can't copy mails.

With deliver, the mail is delivered normally. When hard limit is exceeded, there is an error "rejected: Not enough disk space", just like when I don't use the plugin in lda.

Even the lda setting "quota_full_tempfail = yes" works without the plugin configured in lda section.

So is there any effect of the quota plugin in lda with file system quota?

Thanks Rainer