On Thu, 11 Feb 2010 16:40:04 -0800 Ted Mittelstaedt <t...@ipinc.net> wrote:
> case - but I sure as hell would never be foolish enough to try and > defend it. These hacks simply scream "I got mine and I don't give > a damn if you got yours", Isn't that really your position - that 5xx responses make the botnet move on to someone else. You also seem to arguing that his idea is bad because it make a botnet less efficient at delivering spam. Your argument that it doesn't scale can be applied equally well to rejecting spam per se. Even if spammers do lay-off addresses where spam filters reject at the smtp level, they can't afford to do that if it's ubiquitous.