diff --git a/server/mailserver/middleware/caauth.go b/server/mailserver/middleware/caauth.go
new file mode 100644
index 00000000..c870d7c1
--- /dev/null
+++ b/server/mailserver/middleware/caauth.go
@@ -0,0 +1 @@
+package middleware
diff --git a/server/mailserver/middleware/caforward.go b/server/mailserver/middleware/caforward.go
new file mode 100644
index 00000000..c870d7c1
--- /dev/null
+++ b/server/mailserver/middleware/caforward.go
@@ -0,0 +1 @@
+package middleware