### transport/30_exim4-config_remote_smtp_smarthost
#################################

# This transport is used for delivering messages over SMTP connections
# to a smarthost. The local host tries to authenticate.
# This transport is used for smarthost and satellite configurations.
# Refuse to send any messsage with over-long lines, which could have
# been received other than via SMTP. The use of message_size_limit to
# enforce this is a red herring.

remote_smtp_smarthost:
  debug_print = "T: remote_smtp_smarthost for $local_part@$domain"
  driver = smtp
  multi_domain
.ifndef IGNORE_SMTP_LINE_LENGTH_LIMIT
  message_size_limit = ${if > {$max_received_linelength}{998} {1}{0}}
.endif
  hosts_try_auth = <; ${if exists{CONFDIR/passwd.client} \
        {\
        ${lookup{$host}nwildlsearch{CONFDIR/passwd.client}{$host_address}}\
        }\
        {} \
      }
.ifdef REMOTE_SMTP_SMARTHOST_HOSTS_AVOID_TLS
  hosts_avoid_tls = REMOTE_SMTP_SMARTHOST_HOSTS_AVOID_TLS
.endif
.ifdef REMOTE_SMTP_SMARTHOST_HOSTS_REQUIRE_TLS
  hosts_require_tls = REMOTE_SMTP_SMARTHOST_HOSTS_REQUIRE_TLS
.endif
.ifdef REMOTE_SMTP_SMARTHOST_TLS_VERIFY_CERTIFICATES
  tls_verify_certificates = REMOTE_SMTP_SMARTHOST_TLS_VERIFY_CERTIFICATES
.endif
.ifdef REMOTE_SMTP_SMARTHOST_TLS_VERIFY_HOSTS
  tls_verify_hosts = REMOTE_SMTP_SMARTHOST_TLS_VERIFY_HOST
.endif
.ifdef REMOTE_SMTP_HEADERS_REWRITE
  headers_rewrite = REMOTE_SMTP_HEADERS_REWRITE
.endif
.ifdef REMOTE_SMTP_RETURN_PATH
  return_path = REMOTE_SMTP_RETURN_PATH
.endif
.ifdef REMOTE_SMTP_HELO_DATA
  helo_data=REMOTE_SMTP_HELO_DATA
.endif
.ifdef TLS_DH_MIN_BITS
tls_dh_min_bits = TLS_DH_MIN_BITS
.endif
.ifdef REMOTE_SMTP_SMARTHOST_TLS_CERTIFICATE
tls_certificate = REMOTE_SMTP_SMARTHOST_TLS_CERTIFICATE
.endif
.ifdef REMOTE_SMTP_SMARTHOST_PRIVATEKEY
tls_privatekey = REMOTE_SMTP_SMARTHOST_PRIVATEKEY
.endif
.ifdef REMOTE_SMTP_TRANSPORTS_HEADERS_REMOVE
  headers_remove = REMOTE_SMTP_TRANSPORTS_HEADERS_REMOVE
.endif