rework engine error handle - if something goes wrong, just log to engine log and do not commit partial results.
rework engine error handle - if something goes wrong, just log to engine log and do not commit partial results.

NZRS/dnscheck,NZRS/dnscheck,dotse/dnscheck,dotse/dnscheck,NZRS/dnscheck,dotse/dnscheck,NZRS/dnscheck,dotse/dnscheck,NZRS/dnscheck,dotse/dnscheck,NZRS/dnscheck,dotse/dnscheck