Preventing clients from trying to create folders under inbox

[Aki Tuomi]

> On 13/08/2021 19:09 Bryan K. Walton <bwalton+1608560055 at leepfrog.com> wrote:
> 
>  
> Our Dovecot installation is configured as such:
> 
> mail_location = mbox:/var/vmail/%u:DIRNAME=.mboxdata:INBOX=/var/vmail/%u/INBOX:INDEX=/var/vmail/indexes/%u
> 
> This allows us to continue using mbox formatted files, storing those
> mbox data files in a file called .mboxdata.  This allows our users to
> create folders and subfolders.  The only exception to this is our
> inboxes, which are more traditional mbox files.
> 
> However, we have some Outlook users that insist on trying to create
> subfolders of their inbox.  This doesn't work, since the inbox is a
> file.  But Outlook still does it and it causes sync issues, as there is
> now a subfolder under the user's inbox, but that subfolder is ONLY
> present in Outlook (it isn't present on the server).
> 
> Is there anything that we can configure so that Dovecot instructs
> Outlook that it cannot attempt to create subfolders under the inbox, but
> allow subfolders elsewhere?
> 
> Thanks!
> Bryan

You could try acl plugin, it might let you prevent this.

Aki