Configure EMAIL in devstack

Hi, I am trying to configure email for reset password in devstack. Tried modifying the below properties:

lms.yml
EMAIL_HOST
EMAIL_PORT
EMAIL_USE_TLE

and in lms.auth.json
EMAIL_HOST_PASSWORD
EMAIL_HOST_USER

after setting up above properties also, email is being stored into container file directory.

Anyone has come across this type of issue. Please help me