SASL Failed

[Norman Zhang]

I'm using

cyrus-imapd-2.2.8-4.1.101mdk
cyrus-sasl-2.1.19-5mdk
cyrus-imapd-utils-2.2.8-4.1.101mdk

When tyring "cyradm localhost"

# su cyrus
# cyradm localhost

however cyrus' UNIX password does not work. I tried to create cyrus with 
saslpasswd2, but sasldblistusers2 returns

listusers failed

and no sasldb is created. /etc/sysconfig/saslauthd says 
SASL_AUTHMECH=pam. I also manually created

/usr/local/lib/sasl2/smtpd.conf.
pwcheck_method: saslauthd
mech_list: plain login

/etc/imapd.conf
configdirectory: /var/lib/imap
partition-default: /var/spool/imap
admins: cyrus
allowanonymouslogin: no
deleteright: cyrus
quotawarn: 90
sieveusehomedir: no
sievedir: /var/lib/imap/sieve
sendmail: /usr/sbin/sendmail
hashimapspool: true
sasl_pwcheck_method: auxprop
sasl_mech_list: cram-md5
lmtp_admins: cyruslmtp
lmtp_downcase_rcpt: yes
tls_ca_file: /etc/ssl/cyrus-imapd/cacert.pem
tls_cert_file: /etc/ssl/cyrus-imapd/cert.pem

Regards,
Norman Zhang