1) have enabled quotas on /home/username/mail,
2) have reloaded Dovecot after config change,
3) have read dovecot logs, if there are errors, and
4) maybe you need to configure a limit, in order to enable quotas in
Dovecot at all.
Tried on my server, seems like you're right - Dovecot is ignoring
quota_rule userdb field and grabs the soft limit from the filesystem.
5) maybe try the mount=<path> option, http://wiki2.dovecot.org/Quota/FS
then? I would prefer to let Dovecot enforce quotas rather than rely on
the
filesystem quota mechanism, but keep disk I/O down.
Dunno if "rely" sounds like you don't trust it ;-) But you should place
INDEXes somewhere else, if you enforce quota via file system.
Agree to that - if you count control/index directories towards user's
quota and enforce it on filesystem level, users most likely won't be
able to login and delete mail when they reach it.
