From 43bfa0efbcbf0d44affce26e74a1034ea2d7720e Mon Sep 17 00:00:00 2001
From: Alexey Shchepin <alexey@process-one.net>
Date: Mon, 23 Jan 2017 17:10:28 +0300
Subject: [PATCH] Check message subject in mod_block_strangers

---
 src/mod_block_strangers.erl | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/mod_block_strangers.erl b/src/mod_block_strangers.erl
index c304f20d5..383848724 100644
--- a/src/mod_block_strangers.erl
+++ b/src/mod_block_strangers.erl
@@ -55,7 +55,8 @@ filter_packet({#message{} = Msg, State} = Acc) ->
     LFrom = jid:tolower(From),
     LBFrom = jid:remove_resource(LFrom),
     #{pres_a := PresA} = State,
-    case Msg#message.body == []
+    case (Msg#message.body == [] andalso
+          Msg#message.subject == [])
         orelse ejabberd_router:is_my_route(From#jid.lserver)
         orelse (?SETS):is_element(LFrom, PresA)
 	orelse (?SETS):is_element(LBFrom, PresA)