Quotas and qmail: file number

[Wolfgang Baumgartner]

Is there a patch to qmail, with which I can send
a permanent error instead of a temporary error when
the number of files in the Mailbox exceeds the allowed
number of files (quota). The patch I found only
sends a permanent error when the sum of messages
exceeds the quota size.

My problem is, that I have some users which never empty
their mailbox, but are members of some maillists. And
now this fills my queue and log files.

Wolfgang