bigm/mailhub repository overview

docker run -ti --rm --name mailhub \
    -v /myconfig/mailhub/etc/opendkim/keys:/etc/opendkim/keys \
    quay.io/bigm/mailhub

docker exec -ti mailhub bash

cat <<EOF |
Subject: postfix test mail

line 1
line 2
EOF
sendmail [email protected]

docker exec mailhub /xt/postfix-reconfig.sh

# list of active domains
docker exec -ti <container> sh -c "cat /etc/opendkim/keys/*/mail.txt"

# to validate obtain email from http://dkimvalidator.com and replace upper case text:  
echo "dkim test mail body" | mail -r [email protected] -s "dkim test mail " [email protected]