On Sun, Jan 25, 2004 at 08:48:23PM +0100, Julian Mehnle wrote:
There's nothing effective you can do against spam originating from
hacked client or server computers, except for avoiding being hacked.
Meng Weng Wong [mengwong(_at_)dumbo(_dot_)pobox(_dot_)com] wrote:
Well, you can force all mail to go through the ISP's smtp server, and
then apply outbound controls there. Big market in that, going to arrive
this year. Rate limiting, outbound SpamAssassin, etc.
David Saez [david(_at_)ols(_dot_)es] wrote:
spf will stop all spam comming from hacked client computers. It will
require spammers to buy domains that they must spf-enable so mail could
be accepted from dls/cable hacked computers. This costs money and is
easy to detect.
That's why I wrote "hacked client OR SERVER computers". If the ISP's SMTP or
DNS server gets hacked, you've lost.
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