> a very odd and theoretical setup Nope, I use https://mxguarddog.com/ https://mxguarddog.com/ for one of my domains. That acts as a spam filter, but also hi

> a very odd and theoretical setup Nope, I use https://mxguarddog.com/ https://mxguarddog.com/ for one of my domains. That acts as a spam filter, but also hides the ultimate MX host.