OpenLDAP + TLS

[Anderson Alves de Albuquerque <anderson@belem.voip.nce.ufrj.br>]

 I am trying to put LDAP with TLS, but I have a problem:
---------------------- Debug slapd ------------------------
tls_read: want=2, got=2
  0000:  02 30                                              .0
TLS trace: SSL3 alert read:fatal:unknown CA
TLS trace: SSL_accept:failed in SSLv3 read client certificate A
TLS: can't accept.
TLS: error:14094418:SSL routines:SSL3_READ_BYTES:tlsv1 alert unknown ca 
s3_pkt.c:1052
connection_read(10): TLS accept error error=-1 id=1, closing
connection_closing: readying conn=1 sd=10 for close
connection_close: conn=1 sd=10
daemon: removing 10
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 I am using ldap client.
 I already read a lot of home pages in the Internet, but I don't find the 
solution.

 In my client ldap:
-------- LDAP client ---------------------------------------
ldapsearch -x -b 'dc=br' -D "cn=root,dc=com" '(objectclass=*)' -h localhost -W -f /etc/ldap/ldap.conf -Z
ldap_start_tls: Connect error (91)
        additional info: error:14090086:SSL 
routines:SSL3_GET_SERVER_CERTIFICATE:certificate verify failed
Enter LDAP Password:
ldap_bind: Can't contact LDAP server (81)
        additional info: error:14090086:SSL 
routines:SSL3_GET_SERVER_CERTIFICATE:certificate verify failed
----------------------------------------------------------------


 Does someone know like help me?