Hi, this is my config:
# SMTP server to send emails
smtp:
# smtp or sendmail
transport: smtp
# Path to sendmail command. Required if you use sendmail transport
sendmail: null
hostname: smtp.example.org
port: 587 # If you use StartTLS: 587
username: user@example.org
password: **************
tls: false # If you use StartTLS: false
disable_starttls: false
ca_file: null # Used for self signed certificates
from_address: 'user@example.org'