Actually I was trying to disable offline messages in my application.
So here is the format of message I get -
<message xmlns="jabber:client" from="24@hostname/resource_id" to="25@hostname" type="chat"><addresses xmlns="http://jabber.org/protocol/address"><address delivered="true" type="to" jid="25@hostname"/></addresses><body>37.444075###-122.267602###24</body><delay xmlns="urn:xmpp:delay" from="hostname" stamp="2017-01-02T14:10:38.480Z">Offline Storage</delay></message>
So In my yml file I have removed the mod_offline and restarted the server .Still I am getting these multicast messages , It would be really helpful if somebody can point out the mistake.