The idmap config prefix provides a means of managing each domain defined by the option using Samba's parameteric option support. The idmap config prefix should be followed by the name of the domain, a colon, and either the option name "backend" or a setting specific to the chosen backend. The following example illustrates how to configure the idmap_ad8 for the CORP domain and the idmap_tdb 8 backend for all other domains. idmap domains = CORP default idmap config CORP:backend = ad idmap config CORP:read_only = yes idmap config default:backend = tdb idmap config default:default = yes idmap config default:range = 1000 - 9999