Michael Thomas wrote:
Charles Wyble wrote:
I have SBC / AT&T / Yahoo DSL in Southern California and they block outbound 25 to anything but Yahoo SMTP server farm, and they only allow SSL connectivity at that. I'm all for that personally.
That seems to be the convention wisdom, but the science experiment as it were in blocking port 25 doesn't seem to be correlated (must less causated) with any drop in the spam rate. Because so far as I've heard there isn't any such drop. Spammers and the rest are pretty resourceful.
Well.... SBC in SoCal is one of many providers. I think a lot of spam comes from outside of the united states end user subscriber pools as well. :)
So I still haven't heard why there isn't any emphasis on going after the bots that are by far the biggest problem instead of erecting damage for them to route around.
Well there are plenty of security lists / blogs / forums etc where much effort is being put forth towards eliminating the bots.
I can sort of understand why providers are leery of getting sucked into that battle, but it's got to cost them a fortune for every "My internet is slow" call they take.
Mike
-- Charles Wyble (818) 280 - 7059 http://charlesnw.blogspot.com CTO Known Element Enterprises / SoCal WiFI project