[Dovecot] Why are ACLs for non-existent mailboxes accepted?

[Benny Pedersen]

On 2014-02-20 21:15, Boris wrote:

> If Dovecot would give any error message to the user he would be able to 
> check
> the existence of mailboxes. In reality imho this isn't any additional
> insecurity since I could simply send an email to this mailbox and would
> receive a "delivery failed" message thus knowing of it existence.

what if the email is an alias ?, it still does not revail if its local 
or remote

and there is still the possible that more then one alias have a single 
mailbox

so you loose there :=)