[Dovecot] Dovecot and quotas

[mikael]

Hello,

I have succesfully installed dovecot version 1.0.rc2 on my Debian Sarge.

I have configured quotas (just for tests) like this :

== dovecot.conf ==
...

auth default {
   mechanisms = plain

   passdb pam {
   }

   userdb passwd {
   }
}


protocol imap {
   mail_plugins = quota imap_quota
}


plugin {
   # quota = 10 Mb
   quota = dirsize:storage=10240
}

...
==================


Quotas works without problem : 10Mb for all users... But i would like 
quotas per user and kept thi default value of 10Mb...

How to override this default value ? How to do peruser-quota with 
"passwd" userdb (or "passwd-file") ?


Really thanks for your help,
-- 
Mikaël,