you can always use softquotas (or Maildir quotas) for acchieving quotas on a virtual environment ... which dovecot can handle pretty well.
http://wiki.dovecot.org/Quota/Maildir Em 03/02/2010 14:41, Răzvan Sandu escreveu:
Filesystem quotas are not an option in this scenario, since the UID/GID is the same for all virtual users.
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