dovecot - Oct 2009 - Sendmail and Dovecot Delivery to Virtual Users

I'm new to dovecot and sendmail and my server doesn't forward mails to
'dovecot deliver' at all.
I was reading http://wiki.dovecot.org/LDA/Sendmail and this
http://www.dovecot.org/list/dovecot/2009-June/040353.html from the mailling
list but I could figure it out myself. I someone could point me into the
right direction.

I'm confused with the config for LDA. Basically what I want is every message
coming in go to 'deliver' except if there's no dovecot user of
course. I'm
using 'local_procmail' feature right now, but I tried to comile the
dovecot
Mailer also.

Anyway the dovecot 'deliver' itself works fine. But I cannot receiving
emails or messages don't go anywhere. All the debugging I do with telnet
right now.

first I got 'User Unknown' errors in the maillog so I thought I just
missing
an alias/virtuser entry. So I create one and forward those to procmail. But
now the messages don't go anywhere and the status is sent and I don't
seem
them in the /var/log/dovecot-deliver.log either, so they are stuck in the
middle somewhere.

Oct 16 14:26:26 sendmail[29939]: n9GIQQAh029939: to=|/usr/bin/procmail,
ctladdr=<mail.address> (8/0), delay=00:00:00, xdelay=00:00:00,
mailer=prog,
pri=31420, dsn=2.0.0, stat=Sent

I don't seem to understand how the message get to dovecot's
'deliver' from
sendmail.

Some questions I have which may help to solve the problem myself:
- how can I tell the LDA to lookup dovecot users too? to it would accept it?
- do I need aliases therefore for each dovecot users?
- What would the alias look like or is this the wrong way to do it?
"test.user: |/usr/bin/procmail" ?
- what's the procmail recipe which would work for maildir:/home/vmail/%u
mail_location?

My Sendmail configuration files:
$ grep -v "^dnl" sendmail.mc
divert(-1)dnl
include(`/usr/share/sendmail-cf/m4/cf.m4')dnl
VERSIONID(`setup for linux')dnl
OSTYPE(`linux')dnl
define(`confDEF_USER_ID', ``8:12'')dnl
define(`confTO_CONNECT', `1m')dnl
define(`confTRY_NULL_MX_LIST', `True')dnl
define(`confDONT_PROBE_INTERFACES', `True')dnl
define(`ALIAS_FILE', `/etc/aliases')dnl
define(`STATUS_FILE', `/var/log/mail/statistics')dnl
define(`UUCP_MAILER_MAX', `2000000')dnl
define(`confUSERDB_SPEC', `/etc/mail/userdb.db')dnl
define(`confPRIVACY_FLAGS', `goaway,noetrn')dnl
define(`confDOUBLE_BOUNCE_ADDRESS', `')dnl
define(`confCOPY_ERRORS_TO', `')dnl
TRUST_AUTH_MECH(`EXTERNAL DIGEST-MD5 CRAM-MD5 LOGIN PLAIN')dnl
define(`confAUTH_MECHANISMS', `EXTERNAL GSSAPI DIGEST-MD5 CRAM-MD5 LOGIN
PLAIN')dnl
define(`confTO_IDENT', `0')dnl
FEATURE(`mailertable', `hash -o /etc/mail/mailertable.db')dnl
FEATURE(`virtusertable', `hash -o /etc/mail/virtusertable.db')dnl
FEATURE(always_add_domain)dnl
FEATURE(use_cw_file)dnl
FEATURE(use_ct_file)dnl
FEATURE(`local_procmail', `/usr/libexec/dovecot/deliver', `deliver -f $g
-d
$u', `SPhnu9')dnl
FEATURE(`access_db', `hash -T<TMPF> -o /etc/mail/access.db')dnl
FEATURE(`blacklist_recipients')dnl
EXPOSED_USER(`root')dnl
DAEMON_OPTIONS(`Port=smtp, Name=MTA')dnl
FEATURE(`accept_unresolvable_domains')dnl
LOCAL_DOMAIN(`mydomain.com')dnl
MODIFY_MAILER_FLAGS(`LOCAL', `-f')
MAILER(procmail)dnl

# 1.2.4: /etc/dovecot.conf
# OS: Linux 2.6.30.5-43.fc11.i586 i686 Fedora release 11 (Leonidas) ext4
log_path: /var/log/dovecot.log
info_log_path: /var/log/dovecot-info.log
protocols: imap imaps
listen: localhost
login_dir: /var/run/dovecot/login
login_executable: /usr/libexec/dovecot/imap-login
login_greeting: Ciao.
mail_uid: 501
mail_gid: 502
mail_location: Maildir:/home/vmail/maildir/%n
mail_debug: yes
lda:
  postmaster_address: postmaster at mydomain.com
  hostname: server.mydomain.com
  log_path: /var/log/dovecot-deliver-errors.log
  info_log_path: /var/log/dovecot-deliver.log
auth default:
  user: dovecot-login
  verbose: yes
  debug: yes
  passdb:
    driver: passwd-file
    args: username_format=%n /etc/dovecot/passwd
  userdb:
    driver: static
    args: uid=vmail gid=vmail
  socket:
    type: listen
    master:
      path: /var/run/dovecot/auth-master
      mode: 384
      user: vmail

please tell me if you need more info.
any help, hints and suggestions are welcome.

regards.
Philipp