[Dovecot] address extension going into folder

[Phil Howard]

On Thu, Jul 1, 2010 at 08:47, Edgar Fuß <ef at math.uni-bonn.de> wrote:
> With Postfix, I use
> mailbox_command = DOVECOT_LDA -n -e -m "${EXTENSION}"
> where DOVECOT_LDA is the path do dovecot's deliver. The -n switch prevents creation of the IMAP folder.
> See http://wiki.dovecot.org/LDA

But it (-n) will deliver (rather than reject) into the regular INBOX
if the folder for the extension does not exist?

I'm using Postfix, but with dovecot as a transport.

main.cf has:
virtual_transport = dovecot

master.cf has:
dovecot   unix  -       n       n       -       -       pipe
  flags=DRhu user=vmail:vmail argv=/usr/lib/dovecot/deliver -f
${sender} -d ${user}@${nexthop}

dovecot.conf has:
mail_location = maildir:/home/mail/%Ld/%Ln/mail

I wonder if that ${EXTENSION} works in master.cf.  I guess I gotta go
back to Postfix for reading.  I assumed this would be a Dovecot
problem.