Hi peoples .... i'm tryng configure openldap with postfix but qhen try add the below entry i receive next error: gheorghe:~/difs # ldapadd -f base.ldif -x -D cn=Administrator,dc=domain,dc=com-w 123456 adding new entry "relativeDomainName=@, ou=dns,dc=domain,dc=com" ldap_add: Invalid syntax (21) additional info: objectClass: value #0 invalid per syntax My ldif file: dn: relativeDomainName=@, ou=dns,dc=domain,dc=com objectClass: dNSZone relativeDomainName: @ zoneName: domain.com dNSTTL: 3600 dNSClass: IN sOARecord: ns3.domain.com. administrator.domain.com. 2001030201 3600 1800 604800 86400 nSRecord: ns3.domain.com. mXRecord: 30 mail.domain.com. My include schemas: include /etc/openldap/schema/core.schema include /etc/openldap/schema/cosine.schema include /etc/openldap/schema/inetorgperson.schema include /etc/openldap/schema/nis.schema include /etc/openldap/schema/samba3.schema include /etc/openldap/schema/dnszone.schema include /etc/openldap/schema/yast.schema include /etc/openldap/schema/qmail.schema include /etc/openldap/schema/postfix.schema Any help is welcome...!!!! Best Regards!