dovecot - Nov 2009 - dovecot v 1.28 and virtual folders

I haven't been able to make this work. I've experimented with
different settings in my dovecot.conf for hours.

I have a simple single user ubuntu setup, nothing fancy and would just
like to have a virtual "unread" folder of my main INBOX, for use with
Squirrelmail

So, with just this, all good... subfolders look like
.INBOX.duplicates     for example in the file system

namespace private {
  separator = .
  location =  maildir:~/Maildir
  inbox = yes
}

now, when I try to add a virtual namespace

namespace private {
  subscriptions = yes
  list = yes
  inbox = no
  prefix = virtual.
  separator = .
  location = virtual:~/Maildir/virtual
}

~/Maildir/virtual does exist in the filesystem, I can "subscribe" to
virtual but if I try to create a sub folder of it I get

ERROR: Could not complete request.
Query: CREATE "virtual.test"
Reason Given: [CANNOT] Can't create virtual mailboxes

Squirrelmail is great because it has some nice IMAP testing tools, so
for example, with my current dovecot config I can test the NAMESPACE
command, is that the correct response?

Request:
A003 NAMESPACE
Response:
* NAMESPACE (("" ".")("virtual." "."))
NIL NIL
Namespace completed.

I'm sure the issue is a fundamental lack of understanding of a concept
here ... Any help would be appreciated.

thank you,
-Jim

On Sat, 2009-11-28 at 22:25 -0200, Jim Richard wrote:
> now, when I try to add a virtual namespace
> 
> namespace private {
>   subscriptions = yes
Doesn't matter much, but I'd prefer subscriptions=no so that all
subscriptions are in a single file in ~/Maildir/subscriptions.
> ~/Maildir/virtual does exist in the filesystem, I can "subscribe"
to
> virtual but if I try to create a sub folder of it I get
> 
> ERROR: Could not complete request.
> Query: CREATE "virtual.test"
> Reason Given: [CANNOT] Can't create virtual mailboxes
You can't create virtual folders via IMAP client. You need to configure
them manually by creating the directories and dovecot-virtual files.

-------------- next part --------------
A non-text attachment was scrubbed...
Name: signature.asc
Type: application/pgp-signature
Size: 197 bytes
Desc: This is a digitally signed message part
URL:
<http://dovecot.org/pipermail/dovecot/attachments/20091209/44ab8b93/attachment-0002.bin>