Please give a try to docker mailserver too: https://github.com/docker-mailserver/docker-mailserver https://github.com/docker-mailserver/docker-mailserver It is

Please give a try to docker mailserver too: https://github.com/docker-mailserver/docker-mailserver https://github.com/docker-mailserver/docker-mailserver It is quite easy to setup and give you much control, I do it myself: https://gioorgi.com/2020/mail-server-on-docker https://gioorgi.com/2020/mail-server-on-docker Documentation is very very clear