[Dovecot] Deleting everything left from lazy expunge

[Romer Ventura]

Hello,

My storage is running low and i was wondering what would be the best  
and easy way of deleting everything within the "deleted" and  
"expunged" folders for every user...?

My mail resides in: /srv/mail/vmail/MYDOMAIN.COM/<users>/Maildir/

Thanks..!