TBD

1. install Azure machine
2. setup required hostname

Other howto: https://www.digitalocean.com/community/tutorials/how-to-run-your-own-mail-server-with-mail-in-a-box-on-ubuntu-14-04 https://mailinabox.email https://www.tecmint.com/setup-postfix-mail-server-in-ubuntu-debian/