Everyone that can should host their own HTTP/1.1, DNS and SMTP at home on a battery backed Raspberry 1, 2 or Zero if they have an external IP. To host anything

Everyone that can should host their own HTTP/1.1, DNS and SMTP at home on a battery backed Raspberry 1, 2 or Zero if they have an external IP. To host anything beyond those protocols and/or on more powerful hardware is often counter productive. The problem is getting the ports opened, you need to fight for that right even if it makes spam worse in the short term. Fight for external IP, ports and static IP in that order.