Hello Dieter, DS> My slapd.conf contains the lines: DS> TLSCertificateFile /etc/ssl/ldapcert.pem DS> TLSCertificateKeyFile /etc/ssl/private/ldapkey.pem DS> TLSCACertificateFile /etc/ssl/cacert.pem DS> ldap.conf reads as follows: DS> ssl start_tls Try to add the following to your ldap.conf: TLS_CACERT /etc/ssl/cacert.pem -- Best regards, Peter mailto:spam4octan@highway.ru