HAL was a virus the whole time

I spend hours writing a bash script to automate something I know I’m only going to do once.

Is there a fetish community for people that want to be ripped apart by Torvalds’ anger?

Yea, if you are not willing to be meticulous about learning/understanding all the DNS stuff (SPF/DKIM/DMARC), and plan to host this at home, don’t.

I ran this same system for a very long time on a VPS and had no problems with blacklists, but I’m also a career systems engineer that maintained enterprise systems and exchange servers.

Also note how I am speaking of MIAB in the past tense…

I think the better option is to try and avoid email as much as you can, just like SMS. Outdated tech and not secure. At that point, any ol’ existing email service is good enough.