# export SMTP_SECURITY=starttls # ("starttls", "force_tls", "off") Enable a secure connection. Default is "starttls" (Explicit - ports 587 or 25), "force_tls" (Implicit - port 465) or "off", no encryption (port 25)
# export SMTP_PORT=587 # Ports 587 (submission) and 25 (smtp) are standard without encryption and with encryption via STARTTLS (Explicit TLS). Port 465 (submissions) is used for encrypted submission (Implicit TLS).
# export SMTP_USERNAME=username
# export SMTP_PASSWORD=password
# export SMTP_TIMEOUT=15
## Choose the type of secure connection for SMTP. The default is "starttls".
## The available options are:
## - "starttls": The default port is 587.
## - "force_tls": The default port is 465.
## - "off": The default port is 25.
## Ports 587 (submission) and 25 (smtp) are standard without encryption and with encryption via STARTTLS (Explicit TLS). Port 465 (submissions) is used for encrypted submission (Implicit TLS).
# export SMTP_SECURITY=starttls
# export SMTP_PORT=587
## Whether to send mail via the `sendmail` command
# export USE_SENDMAIL=false
## Which sendmail command to use. The one found in the $PATH is used if not specified.