Sites such as https://www.dan.me.uk/dnsbl then help people do this.
That site in particular may "warn":
> This DNS blacklist contains ALL tor nodes (entry, transit and exit nodes) - think carefully before choosing to use this list for blocking purposes.
but anyone who doesn't understand tor simply won't understand the decision and choose ALL.
Running a relay on your own address isn't sensible because of this. Nevermind an exit node.
I think it might be a problem if I also ran a mail server from home, but almost nobody does that anymore.
I could do some shenanigans on my modem and end up with a new dynamic IP from cox, but generally within hours that new IP would be on whatever list people use to track exit node IPs and the pain would start all over again.