[Dovecot] Extra_fields / first check userdb?

[Leroy van Logchem]

Hi,

I would like to supply a few users with extra_fields. All users are found by
PAM first so the userdb passwd-file doesnt seem to be used. How to alter
the lookup sequence? We can't remove the accounts from the central passwd,
just for Dovecot.

Thanks,
Leroy