dovecot - Dec 2015 - Possible bug about the SPECIAL-USE / CREATE-SPECIAL-USE extensions

Hi all,

I've locally got Dovecot 2.2.21 (5345f22) installed on my MacBook (via
homebrew) that I've been using to test my IMAP library against.

What is interesting is that even though Dovecot does not advertise
CREATE-SPECIAL-USE, it supports creation of special-use folders via the
"CREATE FolderName (USE (\Whatever))" syntax.

According to rfc6154, a server is supposed to advertise the
CREATE-SPECIAL-USE extension if it supports this:

   An IMAP server that supports this OPTIONAL feature will advertise the
   "CREATE-SPECIAL-USE" capability string.  Clients MUST NOT use the
   "USE" parameter unless the server advertises the capability.  Note
   that this capability string is different from the "SPECIAL-USE"
   string defined above, and a server that supports both functions MUST
   advertise both capability strings.


Has this been fixed in a newer version, perhaps? Or could it be a
misconfiguration on my part?


Attached is my dovecot configuration (gotten via dovecot -n).


Thanks,

Jeff
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On 19 Dec 2015, at 20:37, Jeff Stedfast <jeff at xamarin.com>
wrote:
> 
> Hi all,
> 
> I've locally got Dovecot 2.2.21 (5345f22) installed on my MacBook (via
> homebrew) that I've been using to test my IMAP library against.
> 
> What is interesting is that even though Dovecot does not advertise
> CREATE-SPECIAL-USE, it supports creation of special-use folders via the
> "CREATE FolderName (USE (\Whatever))" syntax.
It doesn't really support that syntax yet. It just ignores all the
parameters after the folder name without returning an error.

Ah, thanks for the explanation.

Btw, long time no see, Timo ;-)

Jeff

On Sat, Dec 19, 2015 at 3:05 PM, Timo Sirainen <tss at iki.fi> wrote:
> On 19 Dec 2015, at 20:37, Jeff Stedfast <jeff at xamarin.com> wrote:
> >
> > Hi all,
> >
> > I've locally got Dovecot 2.2.21 (5345f22) installed on my MacBook
(via
> > homebrew) that I've been using to test my IMAP library against.
> >
> > What is interesting is that even though Dovecot does not advertise
> > CREATE-SPECIAL-USE, it supports creation of special-use folders via
the
> > "CREATE FolderName (USE (\Whatever))" syntax.
>
> It doesn't really support that syntax yet. It just ignores all the
> parameters after the folder name without returning an error.
>
>