[Zenst]

I keep reading about spam networks knocked out and yet like any crime, if you take out the number one then everybody moves up a notch and somebody else joins the bottom. So either maybe they could make it harder. ISP's do packet inspection, maybe they could make it useful for the user. Block the sending of spam - both ways. Anybody selling viagra and penil extensions realy should be on a buisness internet account for a start.

The tools are out there, maybe the ISP's could give the users a configuration screen enabling them to block spam upstream. User virtual firewalls could be useful to the user and also the ISP. Maybe users could be tested on what they know and from that certain default settings are made on the firewall and options locked. If a user don't know what there doing then lets help them. Then any block will point them to speak to a human on the phone as they need that level of help. But instead we allow anybody to have a loaded electronic gun drive around the whole of the internet, scary when you think of it like that, but thats what you have, oh and spam.

[0x0]

Many ISPs around the work unconditionally block customers' outgoing TCP port 25 connections, to combat zombies sending spam over SMTP.

I used to find this annoying when running a private mail server, but then I realized that relaying through the ISP outgoing SMTP proxies probably ended up with net benefit in delivery rates anyways, due to IP reputation.