--- a/plugins/mod_tls.lua	Sat Apr 02 11:15:33 2022 +0200
+++ b/plugins/mod_tls.lua	Fri Sep 17 21:18:30 2021 +0200
@@ -80,6 +80,9 @@
 module:hook_global("config-reloaded", module.load);
 
 local function can_do_tls(session)
+	if session.secure then
+		return false;
+	end
 	if session.conn and not session.conn.starttls then
 		if not session.secure then
 			session.log("debug", "Underlying connection does not support STARTTLS");