fixed the setting of the sender in sendUnsafe

network/message/sendUnsafe.go

@@ -52,7 +52,7 @@ func (m *Manager) SendUnsafe(msg message.Send, param params.Unsafe) ([]id.Round,
 		msgCmix := format.NewMessage(m.Session.Cmix().GetGroup().GetP().ByteLen())
 		msgCmix.SetContents(p)
 		msgCmix.SetRecipientID(msg.Recipient)
-		e2e.SetUnencrypted(msgCmix, msg.Recipient)
+		e2e.SetUnencrypted(msgCmix, m.Session.User().GetCryptographicIdentity().GetUserID())
 		wg.Add(1)
 		go func(i int) {
 			var err error