Preventing deletion of mails in some directories?

People,

I can't get the system "chattr" to do what I want so I am wondering if there is some way to prevent deletion of mails in the INBOX and the Sent folders?

Renaming and moving files needs to be possible for Maildir functions and also for me - so I only need deletion prevention . .

Is this possible from Dovecot?

Thanks,

Phil.

Philip Rhoades

PO Box 896 Cowra NSW 2794 Australia E-mail: phil@pricom.com.au