diff --git a/mailcow/src/mailcow-dockerized/data/conf/rspamd/local.d/headers_group.conf b/mailcow/src/mailcow-dockerized/data/conf/rspamd/local.d/headers_group.conf
new file mode 100644
index 0000000..1df92b5
--- /dev/null
+++ b/mailcow/src/mailcow-dockerized/data/conf/rspamd/local.d/headers_group.conf
@@ -0,0 +1,7 @@
+symbols = {
+  "R_MIXED_CHARSET" {
+    weight = 1.0;
+    description = "Mixed characters in a message";
+    one_shot = true;
+  }
+}