### router/350_exim4-config_system_group_aliases

# Allows to use local unix group as local part in /etc/aliases. Eg:
# root: adm

system_group_aliases:
  debug_print = "R: system_group_aliases for $local_part@$domain"
  driver = redirect
  domains = +local_domains
  data = ${sg{${lookup{$local_part}lsearch{/etc/group}}}{^x:[0-9]+:(.*)}{\$1}}