Le 11/01/2011 22:07, Mark Martinec a écrit : >> Consider for a moment how hard it would be for an average spammer to >> spoof rDNS > > This has nothing to do with DNS. The trusted/internal/msa networks > only checks an IP address as it stands in an Received header field, > it does not check nor depend on its rDNS or forward DNS. >
actually, SA relies on MTA headers. if the implicit contract between SA and MTA falls, the result falls too. so it is important that peple understand that we rely on what the trusted MTA say.
