pam config file not working on rhel/centos 8

[anq4]

Hello.

Your /etc/pam.d/poppassd containing:
@include common-password
doesn't correctly authenticate in red hat or centos 8.x

Following lines instead almost work but with an issue
#%PAM-1.0
auth include password-auth
account include password-auth
password include password-auth

When the new password violates some soft security criteria, like in this case containing the username, it returns fisrt a 500 error, that is catched by most webmail systems, but then goes ahead with a 200 code and changes it anyway, so password is really changed and users are at most confused.

Connected to 0.
Escape character is '^]'.
200 poppassd
user pippo
200 Your password please
pass whatever
200 Your new password please
newpass pippone
500 Server error
200 Password changed

[anq4]

This is probably the result of this happening behind on the system, first a warning and then success:

#passwd pippo
Changing password for user pippo.
New password:
BAD PASSWORD: The password contains the user name in some form
Retype new password:
passwd: all authentication tokens updated successfully.