Mail Quota with Dovecot (User + Domain)

[kouga]

Hi all,

I'm enabling mail quota per user by sending mail through Dovecot LDA.
Each user's mail quota DOES work, but domain quota isn't calculated while mails are sent to user's mailbox.

For example, an environment like below.
User quota = 500 MB (set by mistake)
Domain quota = 100 MB

When more than 100MB of diskspace is used,
uploading files through FTP connection will be disabled.
But mails will still be sent to users unless it uses 500MB.

My question:
Is there a way to enable BOTH user and domain quota when receiving mails through Dovecot?