diff --git a/templates/main.cf.j2 b/templates/main.cf.j2
index 04623e9..b9ca677 100644
--- a/templates/main.cf.j2
+++ b/templates/main.cf.j2
@@ -54,3 +54,6 @@ virtual_mailbox_maps =
 
 # use dovecot lmtp for mail transport
 virtual_transport = lmtp:unix:private/dovecot-lmtp
+
+smtpd_sasl_type = dovecot
+smtpd_sasl_path = private/auth