# Set username and password
smtp_sasl_password_maps = static:{{ smtp_service_user }}:{{ smtp_service_pass }}
smtp_sasl_security_options = noanonymous

# Turn on tls encryption 
# smtp_tls_security_level = encrypt
header_size_limit = 4096000

# Set external SMTP relay host here IP or hostname accepted along with a port number. 
relayhost = {{ smtp_internal_host }}:25

# accept email from our web-server only (adjust to match your VPC/VLAN etc)
inet_interfaces = 127.0.0.1