Prohibit dots in folder names

[Aki Tuomi]

On 11.01.2017 11:35, Steffen Kaiser wrote:
> On Wed, 11 Jan 2017, Aki Tuomi wrote:
> > On 10.01.2017 17:38, Marek Grondecki wrote:
> >> Hello Dovecot Community,
> >>
> >> I am using Dovecot 2.2.13-12~deb8u1 (Debian Jessie).
> >>
> >> separator = /
> >> listescape plugin is NOT active
> >> LAYOUT=fs is NOT active
> >>
> >> I would like to prohibit a creation of folders with dot "." in the
> >> names -
> >> so creation of a folder "foo.bar" should NOT be possible.
> >> Currently, when I create "foo.bar" in Outlook 2013 it will be created
> >> but won't be
> >> synchronised with the mail server - Outlook shows it as "foo.bar (Only
> >> this computer)".
> >> Ideally the user should receive an error message informing that "the
> >> folder foo.bar
> >> could not be created."
> >>
> >> Thank you for your help.
> >>
> >> Regards,
> >> Marek Grondecki
>
> > Are you sure the folder is actually created in dovecot instance?
> > Can you run doveadm mailbox status -u username foo.bar?
>
> Yes, they are. If you issue
>
> * create t.t.t.t.t.t.t
>
> the complete set of t's is created. (I'm using Maildir as backend.)
>
> This case is what the listescape plugin is to help. I don't use it
> myself, however.
>
> -- Steffen Kaiser

I am sure that it is created like that, but his Outlook is saying (Only
this computer), which is the reason I am asking. I am sure the command
works over IMAP protocol.

Aki