[Dovecot] multiple authentication mechanisms/passwords for same account

[Tapani Tarvainen]

This may be trivial but reading the documentation I can't
find a clear answer:

If multiple authentication mechanisms (or multiple databases
for one) are defined, does it allow one user account to
have several (at least two) alternative passwords
(so that any of them would work)?

Or does it first map an account to a fixed authentication
mechanism/password and if it fails, others won't be tried?

-- 
Tapani Tarvainen