I was hoping Stalwart would be able to act as my central ID server along with handling email, quotas, etc. via OAuth2 / OpenID Connect. I'm kinda struggling with that in Stalwart though; new concept, new software. I've never been fond of LDAP, so I tried Keycloak. It's *really* complicated, but it does work in the sense that I can configure Nextcloud to "Log in via My Keycloak" and ... it works. I'm not yet sure if it works as managing quota though, without massive headaches. Anyone have experience / opinions on any of the above? I'm not sure I'm even heading down the right path. Goal: One central authority for user IDs / authentication / quota management for email / calendar / contacts / documents & files.