Sending error when packet is dropped

By default, due to nature of SPAM, you do not want to send error packet when SPAM packet is dropped as sending error back will:

  • increase traffic on a server (which in rare cases may lead to overload of a XMPP server)
  • notify spammer that it was not possible to delivery message

It is possible to configure spam-filter to send error back, by setting true to spam-filter return-error property:

Allow sending error. 

'sess-man () {
    'spam-filter' () {
        return-error = true