Miscellany

smarthost:
  debug_print = "R: smarthost for $local_part@$domain"
  driver = manualroute
  domains = ! +local_domains
  transport = remote_smtp_smarthost
  route_list = * smtp.isdsl.net byname
  host_find_failed = defer
  same_domain_copy_routing = yes
  no_more
.endif