Fedora 23

I built an email server with postfix+dovecot+postgresql.

When it comes to retrieve the user password, I have this error from dovecot:

Unknown scheme BLF-CRYPT

In fact, my passwords are encrypted this way in my DB. After some readings, it seems not all Linux distro have glibc built with blowfish support.

the command

$ doveadmin pw -l

does not return in fact BLF-CRYPT in its enabled scheme.

I installed the bcrypt package, but nothing changes.

Is there a solution, or am I missing something?

Thank you for help