[Dovecot] LDA/Posfix error: bounce, user unknown

[Colin Brace]

Hello,

I am trying to get LDA working in conjuction with Postfix, but whenever I
activate Dovecot LDA in main.cf and send myself a test messsage, I get an
error message in maillog:

[...]
May  8 20:47:17 venus postfix/pipe[36077]: 4022B5C38: to=<cb at lim.nl>,
orig_to=<colin at lim.nl>, relay=dovecot, delay=0.02, delays=0.01/0/0/0.01,
dsn=5.1.1, status=bounced (user unknown)
[...]


Postfix's virtual LDA has no such problem:

[...]
May  8 20:49:39 venus postfix/virtual[36181]: F3DF05C37: to=<cb at lim.nl>,
relay=virtual, delay=0.05, delays=0.03/0/0/0.01, dsn=2.0.0, status=sent
(delivered to maildir)
May  8 20:49:39 venus postfix/qmgr[36091]: F3DF05C37: removed
[...]

Here is the LDA section in dovecot.conf:

protocol lda {
    postmaster_address = postmaster at lim.nl
    mail_plugin_dir = /usr/local/lib/dovecot/lda
    mail_plugins = cmusieve
    log_path = /var/log/dovecot-deliver
    info_log_path = /var/log/dovecot-deliver
    auth_socket_path = /var/run/dovecot/auth-master
}

My maildirs are here:

mail_location = maildir:/home/colin/vmail/%u

and Dovecot IMAP has no problem retrieving messages from that location.
What might be going wrong with delivery though?

Thanks.

-- 
  Colin Brace
  Amsterdam
  http://lim.nl