Show HN: Dovel, self host your email with 3 steps

The main web page has almost no information on it: the example configuration has no SSL, nothing is mentioned about whether this uses local mail delivery on Unix(like) systems, no mention is made about DKIM, DMARC, et cetera, the documentation is practically nonexistent... Can you even set your own HELO / EHLO name?

And this: "To install dovel you need golang propperly installed, ports 25 and 443 available"... How does an email server work without port 25 and / or 587?

The three steps are: (1) clone the repo (2) build the server, write config file, run it and (3) "Configure your MX record in your domain registrar to point to your server."

That's not 3 steps and that's not nearly enough to self host your email. No mention of authentication(!), SPF, DMARC, spam filtering, backups, IMAP access or many other things that are required to have a mail server in 2023, not even in TODO list.

Can I run it as docker container? I can't find any Dockerfile in the project root.