[Dovecot] Disallow folder delete

[Daniel L. Miller]

Timo Sirainen wrote:
> On May 20, 2008, at 2:07 AM, Kenneth Porter wrote:
>
>> Is there a straightforward way to disallow the deletion of all IMAP 
>> mailboxes?
>>
>> I have a user who's deleted an important IMAP mailbox and I'm now 
>> recovering a recent copy from the backup. But I'd rather just blanket 
>> disallow all folder deletions.
>>
>> The user is using Thunderbird and this has happened more than once so 
>> I suspect Tbird is willing to let a folder get deleted too easily. 
>> Perhaps there was a delay in the confirmation dialog and the user 
>> clicked ahead and confirmed something he shouldn't have.
>>
>> I'm looking at <http://wiki.dovecot.org/ACL> and it looks like I 
>> should be able to use a group override to disallow "x" (mailbox 
>> delete) but the page says that groups aren't implemented, so I don't 
>> know how one says that nobody can do this for any mailbox.
>
> Using global ACLs gets you closer at least. You can define:
>
> acl = vfile:/etc/dovecot/acls
>
> Then having /etc/dovecot/acls/.DEFAULT probably does something.. But I 
> don't remember if it applies to all mailboxes or just those on the 
> root level or what. I should look into this some day and make all of 
> them possible. :)
This actually may have a real benefit to some specialty folders - such 
as junk/nojunk folders that are looked for by a scanning re-classifier.  
Can you give an example of how to make...Inbox/Junk non-deletable (or 
even better, update the wiki)?

-- 
Daniel