@jomo Yes, and you can actually self-host the Firefox Sync Server.
@jomo That's as easy as changing the about:config entry 'identity.sync.tokenserver.uri'
@attac_hl I think what I loosely remembered was probably the Auth server. But it doesn't seem to be an issue nowadays: https://mozilla-services.readthedocs.io/en/latest/howtos/run-fxa.html
@jomo Hosting the account server is definitely more difficult. E.g., it has the database name hardcoded. However, why would you want to selfhost that? It's just for authentification.
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