>> [TELECOM Digest Editor's Note: Yes, but just imagine, if every
>> legitimate netizen out there would make the effort to add five or
>> ten minutes of extra work to the load of their favorite spammer.
> Then you end up with a distributed denial of service attack on the
> mail servers of the world.
What if mail server operators set up their systems to firewall IP addresses which attempt to send to over a certain percentage of invalid addresses?
What if more mail-ops require valid reverse DNS as a condition of accepting mail sessions? This would screen out most of the bot-nets.
And " wpoison " which was the first well-known harvester-polluting web script always used invalid first-level domains to avoid the DDoS problem.
-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- Herb Oxley From: address IS Valid.