Email. It sounds good on paper until you realize basically every email service on earth either marks you as spam or blocks you completely

I’ve seen far too many compromised Wordpress installations to ever consider installing it in my home dmz.

the one you don't use it

I try to NOT self-host any service that:

1. Is open-source and provides a hosted solution
2. Doesn't have some technical/price requirement (like a media library/photo library where you pay per GB) to use the mentioned hosted version
   • if this is the case, I donate to the project I'm using instead

Personally I don't think it's worth hosting recursive dns resolvers. Most of the options with ad blocking are single points of failure and when it breaks the household acceptance factor is just too low.

Aside from other stuff mentioned here about email. I always assumed I'd become a target for spam that I'd have a harder time filtering out to the point it stops being worth it to have a custom email address.

That and I can almost guarantee I would end up screwing up the backup of my inbox and losing everything rending the whole endeavour pointless.

The login page to your NAS.

Clearly opening RDP port on internet. NEVER.

Internet-accessible authoritative DNS nameserver(s) (unless you have a completely static public IP).