I host quite a few things out of my home connection, not a mail server (yet) because I know my specific IP blocks inbound port 143 and I didn't want to get into

I host quite a few things out of my home connection, not a mail server (yet) because I know my specific IP blocks inbound port 143 and I didn't want to get into a fight with them over running imap off another port. But I just use a dynamic dns address from freedns. I leave my computer on 24/7, and I just run all my web services as nobody users and use fail2ban and ufw as access control., and I prefer secret key authentication over password based auth methods when I can (nothing stops me from giving someone my certs if I want them using some service I provide).