smtp_sasl_auth_enable = yes
smtp_tls_security_level = encrypt
smtp_sasl_password_maps = lmdb:/etc/postfix/custom/sasl_passwd
smtp_sasl_security_options =
smtp_tls_CAfile = /etc/ssl/certs/ca-certificates.crt
smtp_use_tls = yes
#relayhost = /etc/postfix/custom/relay_host