I’m very proud and happy to say that, finally, I managed to configure and put online my mail server! I relied on Postfix as MTA and Dovecot as MDA. Authentication is done on an openldap instance.
I followed this great guide. Though sometimes a bit too easy on some passage, yet very straightforward.
I don’t like to leak information about me, therefore I managed to remove unnecessary mail headers from outgoing mail via Postfix, following this post.
Then I secured (or at least I tried) the communications using TSL. I rely on LetsEncrypt, following this other guide.
The next step is to configure a working XMPP server 🙂