--- a/mod_rest/mod_rest.lua	Sun Mar 07 01:35:43 2021 +0100
+++ b/mod_rest/mod_rest.lua	Sun Mar 07 21:02:18 2021 +0100
@@ -241,7 +241,7 @@
 	end
 
 	local to = jid.prep(payload.attr.to);
-	if not to then
+	if payload.attr.to and not to then
 		return post_errors.new("to");
 	end