Set tls_opt_require_cert to default to NEVER. libldap defaults to DEMAND

due to client needs, we change it back here.

servers/slapd/main.c

@@ -381,6 +381,16 @@ int main( int argc, char **argv )
 		goto destroy;
 	}
 
+#ifdef HAVE_TLS
+	/* Library defaults to full certificate checking. This is correct when
+	 * a client is verifying a server because all servers should have a
+	 * valid cert. But few clients have valid certs, so we want our default
+	 * to be no checking. The config file can override this as usual.
+	 */
+	rc = 0;
+	(void) ldap_pvt_tls_set_option( NULL, LDAP_OPT_X_TLS_REQUIRE_CERT, &rc );
+#endif
+
 	if ( read_config( configfile ) != 0 ) {
 		rc = 1;
 		SERVICE_EXIT( ERROR_SERVICE_SPECIFIC_ERROR, 19 );