John Andersen wrote: > > The very trouble we are in with spam is caused by the fact that > spammers can hide behind several layers of ISPs and forwarders. > The very thing you suggest is the solution IS THE PROBLEM!. > I guess you get different spam then than I get on my mailservers.. Spam from ISP's SMTP servers here is a rarity. Most of it comes directly from infected pc's at home or small sites. Sometimes there is a layer of relays in the header but that's almost always a fake one. When it comes form larger sites or even ISP's it's mostly from well known spam countries and they are already blocked here at the MTA level.
John Andersen wrote: > > If all smtp traffic had to go direct, then finding a spammer > would be easy. You can fake a few headers, but its pretty > hard to fake the IP you are connecting with if you expect > to open a tcp session. > That's the unfortunate situation right now and because of the increasing number of bots there are way to many IP-addresses to block. And the spammers are getting better in dispersing the Spam over all their bots so detecting multiple spams from the same addresses gets more and more difficult for me. Regards Menno -- View this message in context: http://www.nabble.com/What-changes-would-you-make-to-stop-spam----United-Nations-Paper-tf2035870.html#a5610480 Sent from the SpamAssassin - Users forum at Nabble.com.
