a fő hiba szerintem ez (mail.err):
postfix/trivial-rewrite[7815]: fatal: mysql:/etc/postfix/mysql_virtual_alias_maps.cf(0,lock|fold_fix): table lookup problem

ls -l :
-rw-r–r– 1 root root      373 2009-02-16 21:25 dynamicmaps.cf
-rw-r–r– 1 root root    2082 2009-02-22 11:59 main.cf
-rw-r–r– 1 root root    4300 2009-02-16 17:31 master.cf
-rw-r

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1 root postfix  134 2009-02-19 14:33 mysql_virtual_alias_maps.cf
-rw-r

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1 root postfix  197 2009-02-18 18:08 mysql_virtual_domains_maps.cf
-rw-r

---

1 root postfix 12288 2009-02-22 15:11 mysql_virtual_domains_maps.cf.db
-rw-r

---

1 root postfix  140 2009-02-19 14:33 mysql_virtual_mailbox_maps.cf
-rw-r–r– 1 root root    18231 2008-09-03 16:28 postfix-files
-rwxr-xr-x 1 root root    7421 2008-09-03 16:28 postfix-script
-rwxr-xr-x 1 root root    22774 2008-09-03 16:28 post-install
drwxr-xr-x 2 root root    4096 2008-09-03 16:28 sasl
-rw-r–r– 1 root root      25 2009-02-16 21:55 virtual_mailboxes

main.cf tartalma:
# See /usr/share/postfix/main.cf.dist for a commented, more complete version

# Debian specific:  Specifying a file name will cause the first
# line of that file to be used as the name.  The Debian default
# is /etc/mailname.
#myorigin = /etc/mailname

smtpd_banner = $myhostname ESMTP $mail_name (Ubuntu)
biff = no

# appending .domain is the MUA’s job.
append_dot_mydomain = no

# Uncomment the next line to generate „delayed mail” warnings
#delay_warning_time = 4h

readme_directory = no

# TLS parameters
smtpd_tls_cert_file=/etc/ssl/certs/ssl-cert-snakeoil.pem
smtpd_tls_key_file=/etc/ssl/private/ssl-cert-snakeoil.key
smtpd_use_tls=yes
smtpd_tls_session_cache_database = btree:${data_directory}/smtpd_scache
smtp_tls_session_cache_database = btree:${data_directory}/smtp_scache

# See /usr/share/doc/postfix/TLS_README.gz in the postfix-doc package for
# information on enabling SSL in the smtp client.

myhostname = MYHOSTNAME.hu
alias_maps = hash:/etc/aliases
alias_database = hash:/etc/aliases
myorigin = /etc/mailname
mydestination = MYHOSTNAME.hu, links.MYHOSTNAME.hu
relayhost =
mynetworks = 127.0.0.0/8 [::ffff:127.0.0.0]/104 [::1]/128
mailbox_command = procmail -a „$EXTENSION”
mailbox_size_limit = 0
recipient_delimiter = +
inet_interfaces = all

#virtual_mailbox_map = hash:/etc/postfix/virtual_mailboxes

virtual_alias_maps = mysql:/etc/postfix/mysql_virtual_alias_maps.cf
virtual_gid_maps = static:5000
virtual_mailbox_base = /home/vmail
virtual_mailbox_domains = mysql:/etc/postfix/mysql_virtual_domains_maps.cf
virtual_mailbox_maps = mysql:/etc/postfix/mysql_virtual_mailbox_maps.cf
virtual_minimum_uid = 5000
virtual_transport = virtual
virtual_uid_maps = static:5000

broken_sasl_auth_clients = yes
smtpd_recipient_restrictions =
  permit_mynetworks,
  permit_sasl_authenticated,
  reject_non_fqdn_hostname,
  reject_non_fqdn_sender,
  reject_non_fqdn_recipient,
  reject_unauth_destination,
  reject_unauth_pipelining,
  reject_invalid_hostname
smtpd_sasl_auth_enable = yes
smtpd_sasl_local_domain = $myhostname
smtpd_sasl_security_options = noanonymous

ahol a MYHOSTNAME értelem szerűen a saját domainem.
Mellesleg a postfixadmin semmi hibát sem jelez, simán fel tudok venni aliasokat, domain-eket, tehát az adazbázis kapcsolatnak működnie kellene. Az  etc/posfix mappában is rendesen be vannak állítva  a tábla nevek.
Viszont a postfixadmin-ben küldeni akarok egy levelet, akkor valamiért nem küldi el, csak tölt és tölt és tölt… tehát valamiért elakad már a levélküldés is.

Mellesleg a mail.err fájl ilyeneket dobál:
postfix/trivial-rewrite[2986]: fatal: mysql:/etc/postfix/mysql_virtual_alias_maps.cf(0,lock|fold_fix): table lookup problem

Most a mysql-es megközelítéssel próbálkozom.
Az összes fájlra ki kell adni a postmap parancsot? Tehát a mysql_virtual_ailas_maps, mysql_virtual_domains_map, mysql_virtual_mailbox_maps fájlokra mindre?

a mail.err-ben ezt a hibát kapom mellesleg:
postfix/trivial-rewrite[1826]: fatal: mysql:/etc/postfix/mysql_virtual_alias_maps.cf(0,lock|fold_fix): table lookup problem