mozilla/browserid — Issue #454: browserid.log: user is authenticated with an email that doesn't exist in the database
Author: jbonacci
Created: 2011-10-17 20:19:19+00:00
State: open

Found this a few times in today's (10/17/2011) browserid.log on Beta:
debug: user is authenticated with an email that doesn't exist in the database

Under what circumstances would a user action return this debug message?
And, more importantly, why would we want to allow this?