How can i tell SASL2 to stop using /etc/sasldb2 ?

[Gert Cuykens]

I did the following and i am back at square one

unable to open Berkeley db /etc/sasldb2: No such file or directory
Password verification failed
SASL PLAIN authentication failed: authentication failure

/etc/postfix/main.cf
mydomain = lan
myhostname = www.lan
mynetworks = 127.0.0.1/32
myorigin = $mydomain
mydestination = localhost $mydomain
relay_domains =
#mailbox_size_limit =
#message_size_limit =
home_mailbox = mailbox
mailbox_transport = dbmail-lmtp:localhost:24
disable_dns_lookups = yes
local_recipient_maps = mysql:/etc/postfix/recipients.cf
cyrus_sasl_config_path = /etc/postfix/smtpd.cf
smtpd_sasl_path = /usr/lib/postfix/smtpd
smtpd_sasl_auth_enable = yes
smtpd_sasl_local_domain = $mydomain
smtpd_sasl_security_options = noanonymous
smtpd_recipient_restrictions = permit_sasl_authenticated, reject
smtpd_tls_security_level = may
smtpd_tls_cert_file = /etc/ssl/certs/ssl-cert-snakeoil.pem
smtpd_tls_key_file  = /etc/ssl/private/ssl-cert-snakeoil.key

/etc/postfix/smtpd.cf
pwcheck_method: auxprop
auxprop_plugin: sql
mech_list: login plain cram-md5 digest-md5 ntlm
sql_engine: mysql
sql_user: dbmail
sql_passwd:
sql_database: dbmail
sql_statement: SELECT passwd FROM dbmail_users WHERE userid = '%u'
log_level: 7

/etc/postfix/master.cf
smtp        inet  n       -       n       -       -       smtpd
...