A simple question to this community, what are you self-hosting? It's probably fun to hear from each-other what services we are running.
Please mention at least the service (e.g. e-mail) and the software (e.g. postfix). Extra bonus points for also mentioning the OS and/or hardware (e.g. Linux Distribution, raspberry pi, etc) you are running on.
Apache/PHP/mariadb as both reverse proxy for Nextcloud and the mailcow web interface and webserver for personal and company websites, bitwarden and bookstack
Custom backup server (wireguard connections to different sites and incremental backup routines with bash/rsync)