Oh could you please tell me where i can find the log.
I've set:
// system error reporting: 1 = log; 2 = report (not implemented yet), 4 = show, 8 = trace
$rcmail_config['debug_level'] = 4;
// log driver: 'syslog' or 'file'.
$rcmail_config['log_driver'] = 'file';
But cannot find any log file.