Tony O wrote:
>ibm has developed some sort of hardware that would return spam to
>servers overloading them with their own email. I think it is server
>side though I do recall reading about something similar to this that
>was software driven.
>
>
This is quite useless, because the sent from is forged and spammers use
open relays or hacked servers (particularly exchange with an OWA access,
it's fairly straightforward), not their own machines. Looking at my logs
on my mail server, I see that in the last 24 hours, 1299 messages were
rejected because they had blacklisted IPs with known forged emails.
American companies with pacific rim IPs, for example... And how many
emails have you gotten stating your message was rejected because it
contained a virus when in fact you had sent none?
So, not only the spammers would not get crushed, but the victims would
be doubly victimized. And the internet traffic would go way up.
If more people would use real time spam, open relay and weak security
blacklists (the mail server verifies if the machine connecting is legit
and not blacklisted), that open relays were closed, that people used
firewalls with statefull inspection and tripwires (block the IP that
violates so many policies of the firewall for x hours or days), etc etc.
I do all that (plus some of my own filters) and altough I process over
15,000 emails a day on my server (not this email) I have not seen spam
in the past several months. And you can do that for any type of account,
including mailing lists...
Francois
Recommended format for your email subject lines:
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Received on Tue Jul 12 04:25:10 2005
