diff --git a/luci-app-mosdns/root/etc/mosdns/rule/greylist.txt b/luci-app-mosdns/root/etc/mosdns/rule/greylist.txt
index e69de29..3168eb2 100644
--- a/luci-app-mosdns/root/etc/mosdns/rule/greylist.txt
+++ b/luci-app-mosdns/root/etc/mosdns/rule/greylist.txt
@@ -0,0 +1 @@
+fonts.gstatic.com