DEFCONF(userconf_dir, $home/.mail)
DEFCONF(alias_file, /etc/aliases)
DEFCONF(ca_dir, /etc/ca)
+DEFCONF(dkim_keys_dir, /var/lib/dkim-keys)
## User address suffix handling.
DEFCONF(user_suffix_list, +* : -*)
DEFCONF(relay_clients, <m4_dnl
; +trusted m4_dnl
; 172.31.80.8 m4_dnl chiark (VPN)
-; 172.29.198.161 ; 2001:ba8:1d9:a000::1:1 m4_dnl national
+; 172.29.198.161 ; 2001:8b0:c92:a000::1:1 m4_dnl national
)
+## DKIM headers list.
+## Surprise! Internal whitespace isn't allowed here.
+DEFCONF(dkim_headers,m4_dnl
+References:In-Reply-To:Subject:To:Date:Message-ID:m4_dnl
+From:Sender:Reply-To:Cc:m4_dnl
+Content-Transfer-Encoding:Content-Type:MIME-Version:m4_dnl
+Content-ID:Content-Description)
+
## TLS certificate list.
DEFCONF(certlist,
<:m4_ifelse(t, m4_ifelse(MODE, hub, nil, MODE, srv, nil, t),