This documentation is for Dovecot v2.x, see wiki1 for v1.x documentation.

Filesystem quota

Dovecot doesn't work too well with filesystem quota currently. But there are a few things you can do:

So, use something like:

# mbox:
default_mail_env = mbox:%h/mail:INBOX=/var/mail/%u:INDEX=/var/no-quotas/index/%u

# maildir:
default_mail_env = maildir:%h/Maildir:INDEX=/var/no-quotas/index/%u:CONTROL=/var/no-quotas/control/%u

Software quotas

Dovecot 1.0 supports quota using a quota plugin. It's currently discussed in [wiki:LDA Dovecot LDA] page and it supports only very simple quota calculation which is suitable only for mboxes. Maildir++ quota support will come later.