miaou-server/templates/hardened/mailer/msmtprc.j2

# Set default values for all following accounts.
defaults

# Use the mail submission port 587 instead of the SMTP port 25.
port 587

# Always use TLS.
tls on

# Set a list of trusted CAs for TLS. The default is to use system settings, but
# you can select your own file.
tls_trust_file /etc/ssl/certs/ca-certificates.crt

# The SMTP server of your ISP
account alert
host {{ alert.smtp.server }}
from {{ env.fqdn }} <{{ alert.from }}>
auth on
user {{ alert.smtp.username }}
password {{ alert.smtp.password }}

# Set default account to isp
account default: alert

# Map local users to mail addresses
aliases /etc/aliases