Linux LDAP SASL/Digest-md5 login problem

hello guys, need some help to login with digest-md5 mechanism.

when i do a search like

[root@einstein root]# ldapsearch -x -b "dc=bahadoer,dc=nl"

I get to see the right entries.

but look at this

[root@einstein root]# ldapsearch -b "dc=bahadoer,dc=nl"
SASL/DIGEST-MD5 authentication started
Please enter your password:
ldap_sasl_interactive_bind_s: Internal (implementation specific) error (80)
additional info: SASL(-13): user not found: no secret in database

I'm sure i created a user "root" in the sasldb with " saslpasswd -c root" and it's shown, when i type

[root@einstein root]# sasldblistusers
user: root realm: einstein.bahadoer.nl mech: DIGEST-MD5
user: root realm: einstein.bahadoer.nl mech: PLAIN
user: root realm: einstein.bahadoer.nl mech: CRAM-MD5

and

[root@einstein root]# sasldblistusers2
manager@einstein.bahadoer.nl: userPassword
root@einstein.bahadoer.nl: userPassword


[root@einstein root]# ldapsearch -U 'uid=root,dc=bahadoer,dc=nl' -b 'dc=bahadoer,dc=nl' 'ObjectClass=People'
SASL/DIGEST-MD5 authentication started
Please enter your password:
ldap_sasl_interactive_bind_s: Insufficient access (50)
additional info: SASL(-14): authorization failure: unable canonify user and get auxprops

[root@einstein root]# ldapsearch -x -D 'uid=root,ou=People,dc=bahadoer,dc=nl' -b 'dc=bahadoer,dc=nl' 'ObjectClass=*'
enter LDAP password:
bla..bla...

This works, but it doesn't when i use digest-md5.