I use OpenLDAP to storage my e-mail users, with qmail-schema. It's ok. I use qmail-ldap, and it's ok, qmail create files (maildirsize and others), normally.

Actually, i need install maildrop, to control spamassassin.. i compile maildrop with options:

--without-db --disable-userdb --enable-maildirquota --enable-maildropldap --with-ldapconfig=/etc/maildrop/maildropldap.config --with-etcdir=/etc/maildrop

In my maildropldap.config, i have:

quota_attr mailQuota

In mailQuota on OpenLDAP, i have:

50000000S

and set in deliveryProgramPath "/usr/local/bin/maildrop /etc/maildroprc". It's ok, maildrop run and configure spamassassin on it.

Maildrop update file maildirsize when new messages is coming. But, when a new e-mail user as created, maildrop don't create file maildirsize. And, when i change mailQuota value, 25000000S (example), maildrop don't update maildirsize file for new quota value.