You can run a sync server that accepts tokens from Mozilla, but I'm not sure it makes any sense that way. The only difference is that you'll have some audit over sync blob store access logs, but that's about it.
Re:Firefox 52 released
by simplehuman on Tuesday March 07, 2017 @11:05AM
(#13811444)
This is exactly the problem. They have just made it hard for no reason. I want concrete information as well with an easy to run guide. It's not clear why I need to use Mozilla accounts.
I've just skimmed through this guide: https://docs.services.mozilla.com/howtos/run-sync-1.5.html#h...
It doesn't look too difficult and it says that running your own account server is optional. Or does it mean that you can run your own sync server using a mozilla account? I'm not sure I understand how sync server and accounts server interact exactly...