Question about using ipurge

[Andrés Tarallo]

We need to clean certain mails from a mailbox. Specifically we are 
trying to clean mails older than 30 days. So we execute (as cyrus) 
this command:

ipurge -d 30 username

It returns almost inmediately but nothing happens and the mails remain 
there. We didn't use -f flag because we were affraid of deleting all 
mailboxes. 

Thanks in advance

A/P Andres Tarallo
WD&B Consultores
Montevideo - Uruguay