diff --git a/install_amavis.sh b/install_amavis.sh
index ba0805f..891a3cb 100755
--- a/install_amavis.sh
+++ b/install_amavis.sh
@@ -4699,6 +4699,7 @@ while IFS='' read -r _line || [[ -n $_line ]] ; do
 smtp      inet  n       -       y       -       -       smtpd
    -o smtpd_proxy_filter=127.0.0.1:10024
    -o content_filter=
+   -o smtpd_sasl_auth_enable=no
 EOF
 		if ! $submission_present && ! $smtps_present && ! $localhost_10025_present ; then
 					cat >> $postfix_master_cf << EOF