TLS/SSL Configuration for LDAP

[Informations <test@newpanel.com>]

In my slapd.conf i have :

TLSCertificateFile      /usr/local/ssl/certs/server.pem
TLSCertificateKeyFile   /usr/local/ssl/certs/server.pem


When i use
ldapsearch -x -H 'ldaps://ldap.mydomain.com' -b 'ou=company, 
dc=mydomain, dc=com'
i have a good result

if i use AddressBook in Netscape with Port : 636
I have an error an no result

debug of slapd is like that :

TLS trace: SSL_accept:error in SSLv3 read client certificate A
TLS trace: SSL_accept:error in SSLv3 read client certificate A
daemon: select: listen=6 active_threads=0 tvp=NULL
daemon: activity on 1 descriptors
daemon: activity on: 9r
daemon: read activity on 9
connection_get(9): got connid=2
connection_read(9): checking for input on id=2
TLS trace: SSL3 alert read:fatal:bad certificate
TLS trace: SSL_accept:failed in SSLv3 read client certificate A
TLS: can't accept.
TLS: error:14094412:SSL routines:SSL3_READ_BYTES:sslv3 alert bad 
certificate s3_pkt.c:1031
connection_read(9): TLS accept error error=-1 id=2, closing
connection_closing: readying conn=2 sd=9 for close

Have you an idea ?
Thanks