[Dovecot] using Lazy_Expunge to enforce retention policy

[Timo Sirainen]

On Sun, 2010-07-25 at 15:37 -0400, Jim Salter wrote:

> How can I use Lazy_Expunge to completely PREVENT users from deleting 
> email permanently?

I guess currently there is no easy way to do it. You could use
non-guessable prefixes, but that's security through obscurity..

I was first thinking about using a default ACL file, but that doesn't
really work either. I guess I should some day implement proper "default
ACLs for a namespace" support..