Okay, now the main concern I have with SMTP: is it even possible for me to self-host an SMTP server, and to expose it ONLY via Cloudflare Tunnel, and NOT open any ports in the firewall?

Does that work, I mean?

I've read things that have confused me even more about this; the general consensus, as I understand it, is that that should work in theory but it probably doesn't actually work, or if it does work then for some reason it goes straight to spam anyway (which I would need to see to believe, frankly, because Cloudflare's IP addresses being misinterpreted as spam, would be weird and also ironic, I think).

#SelfHosting #SelfHosted #SMTP #Cloudflare #CloudflareTunnel