If I wanted to do this today I would use iTunes and an old iPhone as the mp3 player. I would use an old laptop to rip, or iTunes to purchase.

It’s used for out of band management. With the correct hardware items (nic and gpu) it’s called vPro. With the proper certificate and supporting infrastructure it can auto-enroll into a management service such as SCCM. It allows companies to remotely view logs, bios settings and other items. With vPro it can include a complete remote KVM solution.

You can disable it from most UEFI settings interfaces without worry of causing other issues.

I just looked they have a service called “alternative port 25” that addresses this issue.

Honestly though, once you start adding up costs for these workarounds you have to wonder if it’s easier to just get a business internet circuit, cloud security gateway, or just host the email online.

You can use a port reflector service. No ip.com might still offer it. Basically forwards anything incoming to their ip on port 25 to your ip and whatever port you specify.

there is a lot more to modern firewall app detection than ports. My Palo Alto has a specific category to detect and block dns over https.

It’s trivial for me to detect and block dns over https with modern firewalls.

Would it heat up the oceans: yes.

Significantly:no.

If this pans out it would be a lot better than what we are doing now.

The last panel but also with an instruction pamphlet.