exim-docker/exim.conf.m4

dnl values
define(`HOSTNAME', esyscmd(`echo -n $HOSTNAME'))dnl
define(`LOCALMAILNAME', esyscmd(`echo -n $LOCALMAILNAME'))dnl
define(`SMARTHOST', esyscmd(`echo -n $SMARTHOST'))dnl
define(`SMARTHOST_USER', esyscmd(`echo -n $SMARTHOST_USER'))dnl
define(`SMARTHOST_PASS', esyscmd(`echo -n $SMARTHOST_PASS'))dnl
define(`RELAYNETS', esyscmd(`echo -n $RELAYNETS'))dnl
define(`WHITELISTED_RECIPIENTS', esyscmd(`echo -n $WHITELISTED_RECIPIENTS'))dnl


ifelse(SMARTHOST, `', `
errprint(`Error: SMARTHOST not set')
m4exit(1)
')

ifelse(HOSTNAME, `', `
errprint(`Error: HOSTNAME not set')
m4exit(1)
')


dnl ----------------------------------------------------------------
dnl template for exim.conf

primary_hostname = HOSTNAME

acl_smtp_rcpt = acl_check_rcpt

tls_advertise_hosts =

begin routers
smarthost_route:
  driver = manualroute
  domains = *
  transport = smarthost_smtp
  route_list = * SMARTHOST

begin transports
smarthost_smtp:
  driver = smtp
  port = 25
  multi_domain
ifelse(SMARTHOST_USER, `', `', `dnl
  hosts_require_auth = *
')

ifelse(SMARTHOST_USER, `', `', `
begin authenticators
plain:
  driver = plaintext
  public_name = PLAIN
  client_send = ^SMARTHOST_USER^SMARTHOST_PASS

login:
  driver = plaintext
  public_name = LOGIN
  client_send = : SMARTHOST_USER : SMARTHOST_PASS
')

begin acl
acl_check_rcpt:
  accept
    hosts = RELAYNETS
ifelse(WHITELISTED_RECIPIENTS, `', `', `
    domains = WHITELISTED_RECIPIENTS
')
  deny
    message = "550 5.7.1 Relaying denied"

ifelse(LOCALMAILNAME, `', `', `
begin rewrite
*@* ${1}@LOCALMAILNAME Ffrs
')