Turn on debug mode in OpenDMARC
In OpenDMARC config file /etc/opendmarc.conf
, find parameter MilterDebug
like below:
MilterDebug 0
Set its value to 1
and restart opendmarc
service to enable debug mode:
MilterDebug 1
It's configured by iRedMail to log to /var/log/opendmarc/opendmarc.log
.