Symptom:The following application fault occurs:('dmarc/dmarc.py _check_dkim_alignment|787', "", "'test'", '[egg/smtp_server.py main|702] [egg/smtp_server.py cmd_data|2695] [egg/smtp_server.py _verify_dmarc|2521] [dmarc/dmarc.py check_dmarc_alignment|...