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

[Gert Cuykens]

Can i ask a other postfix question because every time i post something
on the postfix list i get jack didely sqwat.

/etc/hosts
127.0.0.1 localhost
192.168.1.17 www.lan www

root at www:/etc/postfix# netcat localhost 25
220 www.lan ESMTP Postfix
AUTH PLAIN cm9vdAByb290AHJvb3Q=
235 2.0.0 Authentication successful
mail from: root
250 2.1.0 Ok
rcpt to: root
250 2.1.5 Ok
data
354 End data with <CR><LF>.<CR><LF>
dddddddddddddd
.
250 2.0.0 Ok: queued as 5B79645405D
quit
221 2.0.0 Bye

mail.log
to=<r... at lan.lan>, orig_to=<root>, (unable to look up host lan.lan: No
address associated with hostname)

root at www:/etc/postfix# cat main.cf
mydomain = lan
myhostname = www.lan
mynetworks = 127.0.0.1/32
myorigin = $mydomain
mydestination = $mydomain
relay_domains =
#mailbox_size_limit =
#message_size_limit =
home_mailbox = INBOX
mailbox_transport = dbmail-lmtp:localhost:24
disable_dns_lookups = yes
local_recipient_maps = mysql:/etc/postfix/recipients.cf
smtpd_sasl_auth_enable = yes
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
root at www:/etc/postfix#

Why does postfix at lan.lan ?