mailbox_transport_maps problem

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4 msg	mailbox_transport_maps lookup key

mailbox_transport_maps problem
\ Peter Rabbitson (15 Apr 2007)
. \ Peter Rabbitson (15 Apr 2007)
. \ Victor Duchovni (15 Apr 2007)
. . \ Peter Rabbitson (15 Apr 2007)
. . . \ Victor Duchovni (15 Apr 2007)
. . . . \ Peter Rabbitson (15 Apr 2007)
. . . \ (Wietse Venema) (15 Apr 2007)
. . . . \ Peter Rabbitson (15 Apr 2007)
. . . . . \ (Wietse Venema) (15 Apr 2007)
. . . . . . \ (Wietse Venema) (15 Apr 2007)

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3 msg	Server configuration problem
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3 msg	Mail to local domains
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13 msg	How to make postfix use one IP for receiving an...
3 msg	ldap search fails

Subject:	mailbox_transport_maps problem
Group:	Postfix-users
From:	Peter Rabbitson
Date:	15 Apr 2007

Hi,

I want to use dbmail to store user mailboxes with some exceptions being
delivered via traditional procmail. For this I did the following:

# Explicitly route local mail
mailbox_transport_maps = hash:/etc/postfix/local_delivery

# Make the default local transport point to dbmail
mailbox_transport = dbmail-lmtp:localhost:24

The problem is that mailbox_transport_maps does not seem to have any
effect and _all_ local mail goes to the lmtp daemon. In order to isolate
the problem I made a bogus /etc/postfix/local_delivery to route all mail
to dbmail-lmtp, and commented out mailbox_transport. Now as a result all
mail is delivered via procmail. Can somebody tell me what am I doing
wrong? Various relevant info follows:

=== postconf (just relevant bits) ===
local_recipient_maps = proxy:unix:passwd.byname $alias_maps
local_transport = local:$myhostname
mailbox_command = procmail -a "$EXTENSION"
mailbox_command_maps =
mailbox_transport =
mailbox_transport_maps = hash:/etc/postfix/local_delivery

=== dump of /etc/postfix/local_delivery ===
root@Arzamas:/etc/postfix# db4.5_dump -p local_delivery.db
VERSION=3
format=print
type=hash
db_pagesize=4096
HEADER=END
*\00
dbmail-lmtp:localhost:24\00
DATA=END
root@Arzamas:/etc/postfix#

=== actual log contents with the above settings ===