Fwd: Mailbox sharing not working

[Kees van Vloten]

On 17-02-2022 10:02, Aki Tuomi wrote:
>> On 17/02/2022 10:39 Kees van Vloten <keesvanvloten at gmail.com> wrote:
>>
>>   
>> On 17-02-2022 09:16, Aki Tuomi wrote:
>>>> On 17/02/2022 10:14 Kees van Vloten <keesvanvloten at gmail.com> wrote:
>>>>
>>>> On 17-02-2022 07:28, Aki Tuomi wrote:
>>>>>> On 16/02/2022 21:40 Kees van Vloten <keesvanvloten at gmail.com> wrote:
>>>>>>
>>>>>> Hi Team,
>>>>>>
>>>>>>
>>>>>> I am trying to setup mailbox sharing. But although user test2 shares
>>>>>> INBOX with test1, it is not visible for user1.
>>>>>>
>>>>>> doveadm  acl get -u test2 INBOX
>>>>>> ID         Global Rights
>>>>>> user=test1        admin create delete expunge insert lookup post read
>>>>>> write write-deleted write-seen
>>>>>>
>>>>>> cat /srv/mail/dovecot/lib/shared-mailboxes.db
>>>>>> shared/shared-boxes/user/test1/test2 at example.com
>>>>>> 1
>>>>>>
>>>>>> Log output:
>>>>>>
>>>>> <snip />
> I think your problem is that you are using test1 and test2 as usernames, but shared folder is for test2 at example.com
>
> The sharing must happen with same user names as your users are logging in.
>
> Aki


Users are logging in with username only (and in most situations with a 
krb5 ticket):

auth_username_format = %Lu

Is there a way to prevent sharing as the %n name (test2 at example.com)?

Or is the better approach to login with %n (and would that work with 
gssapi login)?