docker-mailserver/target/opendmarc/default-opendmarc

# Command-line options specified here will override the contents of
# /etc/opendmarc.conf. See opendmarc(8) for a complete list of options.
#DAEMON_OPTS=""
#
# Uncomment to specify an alternate socket
# Note that setting this will override any Socket value in opendkim.conf
#SOCKET="local:/var/run/opendmarc/opendmarc.sock" # default
#SOCKET="inet:54321" # listen on all interfaces on port 54321
#SOCKET="inet:12345@localhost" # listen on loopback on port 12345
#SOCKET="inet:12345@192.0.2.1" # listen on 192.0.2.1 on port 12345

SOCKET="inet:8893@localhost"