class mail::tls {
  # TLS
  postfix::config { "smtpd_tls_cert_file": value => '/etc/ssl/certs/cert.crt' }
  postfix::config { "smtpd_tls_key_file":  value => '/etc/ssl/private/cert.pem' }
  postfix::config { "smtpd_use_tls":       value => 'yes' }
  postfix::config { "smtp_use_tls":        value => 'yes' }
}