problem in add entry inopen ldap

[openldap <openldap@8848.net>]

When i want to add  new entries with ldapadd -x -r -F -v -D "o=qmailusers,dc=mail,dc=hollybridge,dc=not" -w secret -f example.ldif,it happens an error of 
 adding new entry "dc=mail, dc=hollybridge, dc=not"
ldap_add: Operations error
The slapd.conf and example.ldif is like attachement.Why?Thanks for your any good hits.
 				
　　　　　　　　　　　　　　openldap
　　　　　　　　　　　　　　openldap@8848.net
　　　　　　　　　　　　　　　　　2002-02-20

Attachment: slapd.conf
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Attachment: example.ldif
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