diff --git a/postwhite.conf b/postwhite.conf
index f87700e..6b18c82 100644
--- a/postwhite.conf
+++ b/postwhite.conf
@@ -20,6 +20,8 @@ include_yahoo="yes"
 # Do you also want to build a blacklist?
 enable_blacklist=no
 blacklist_hosts=""
+# Enter a file with domains, one per line to build a blacklist based on it eg: /etc/bad_domains.list
+blacklist_hosts_file=""
 
 # Do what to invalid IPv4 addresses and CIDRs?
 # Valid settings are 'remove' 'fix' or 'keep'