[Dovecot] Disallow Deletion from Trash Folder

[Steffen Kaiser]

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On Thu, 28 Feb 2013, Bradley Rintoul wrote:

>
> I've been tasked with trying to find a way to keep users from ever "permanently"
> deleting emails.  The users are running Thunderbird and are using the "Archive"
> option for when emails are deleted.  However, they are still able to delete
> emails from the Archive folders...  I'm wondering if there's any way that I can
> configure Dovecot to make sure that emails *never* get removed from the
> filesystem.  I know it's probably kind of a bizarre request, but is there any
> way that Dovecot can help me out in this regard?

hmm, I understand your request so that a) you want to prevent to delete 
any message, b) you want to prevent to delete from Archive.

For a) go with Robert's idea, e.g. add a global "before" Sieve script, 
that files a copy of the message into yet another mailbox hierarchie, the 
user has been restricted by ACLs. Or redirect a copy of these mails to yet 
another "backup" account the users may access via a shared namespace.

For b) ACLs may work. However, users cannot move messages around in the 
Archive anymore, I think.

- -- 
Steffen Kaiser
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