I repeatedly see people saying “don’t host your own mailserver”. So what are we supposed to do? Just give up and let megacorps own all of our mail? I get it, it goes to those servers anyways. F-that. I’m not giving up yet another service to them. Personally, I have a VPS with racknerd and use docker mail server. Been using it for a couple years now and no issues so far. Just make sure your DKIM/SPF records are good.