[Guest invitation email] HOW TO REPLACE_FROM_EMAIL with EMAIL_HOST_USER

WHAT THE OFFICIAL DOC SAY :
Starting from version 6.0, you can add/edit roles and permission for users.
This new feature allow users to invite people outside of the organization as guest (“Invite People” section at sidebar of home page).
Users can invite a guest user by providing his/her email address, system will email the invite link to the user.

MY PROBLEM
when a user Eric (eric@organisation.fr) invit a guest,
the guest receive a mail from : webmaster@organisation.fr and not from eric@organisation.fr !!!

MY CONF
EMAIL_USE_TLS = False
EMAIL_HOST = ‘smtp.organisation.fr
EMAIL_HOST_USER = ‘webmaster@organisation.fr’
EMAIL_HOST_PASSWORD = ‘xxx’
EMAIL_PORT = 25
DEFAULT_FROM_EMAIL = EMAIL_HOST_USER
SERVER_EMAIL = EMAIL_HOST_USER
REPLACE_FROM_EMAIL = True
ADD_REPLY_TO_HEADER = True

Thank you for help

I guess this is the system notification email address, e.g. register\forget pw etc… It does not make sence when personal invitation occurs.