diff --git a/etc/example.conf b/etc/example.conf
index 412b3b4f..779a5ed4 100644
--- a/etc/example.conf
+++ b/etc/example.conf
@@ -41,7 +41,9 @@ number_of_worker_processes=10
 max_requests_per_child=1000
 
 ; SMTP HELO identification string
-hostid=mailarchiver.localhost
+; this should be the FQDN part of the email address
+; where you copy emails, eg. archive@piler.yourdomain.com -> piler.yourdomain.com
+hostid=piler.yourdomain.com
 
 ; write pid file
 pidfile=/var/run/piler/piler.pid