Hi,
AFAIK, the backend is only used as a way to determine the used space, not as a way to define the limits. So you need to specify the maximum quota; the filesystem quota is not recognized. E.g. when specifying maildir as backend Dovecot will check the maildir quota in stead of using used diskspace as reported by the OS.
if filesystem-quota for the user is present and another quota is configured in dovecot, dovecot can not overrun the system-quota.
fs-quota not only reports used space, but also enforces the quota-rules - regardless of dovecot configuration.
I would not recommend using filesystem-quotas as dovecot runs into issues regarding indexes (see http://wiki.dovecot.org/Quota/FS for additional infos).
Use maildir-quota, perhabs with dict-quota-storage, and no filesystem-quota - this works great and also gives easy access for generating reports about user activities through sql-queries.
best regards, Anton -- ADIT Systems Anton Dollmaier, B.Sc. Im Moos 22 84323 Massing Telefon: +49-700-46862348* (Mo-Sa, 10:00-20:00 Uhr) Telefax: +49-700-32922348* (*: 12ct./Minute aus dem Netz der DTAG, ggf. abweichende Kosten aus dem Mobilfunknetz)
