[Dovecot] Delete old mails and refresh quota

Hello.

I use dovecot 1.0.13. So, I can't use expire plugin (require dovecot 1.1+). For delete old mails in Junk mailboxe, I use a cron: find /var/mail/vmails/ -regex '.*Junk/cur/.*' -ctime +30 -delete

It works. However, quota is not refreshed. If my quota is to 90% and I delete 85% of my mails, quota still 90%, not 5%. I must delete my maildirsize after this cron.

Do you have another solution to actualisize my maildirsize after a delete of mail?

Thanks!

• Nicolas.