North American Network Operators Group

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Re: Anti-spam System Idea

  • From: Daniel Reed
  • Date: Mon Feb 16 10:31:04 2004

On 2004-02-15T20:43-0500, Jon R. Kibler wrote:
) [email protected] wrote:
) > On Sun, 15 Feb 2004 [email protected] wrote:
) > > If we block outbound port 25 SYN packets from origin addresses in the DHCP
) > > address blocks, we solve the problem for everybody.
) EXACTLY correct!

Not quite exactly, no; perhaps by adding the blocking of incoming ACKs with
a source port of 25 might be closer to solving the problem "for everybody".

But this is part of my point: There is no simple answer, because spammers
will eventually [hire someone to] come up with a technical work around for
whatever you do.

Daniel Reed <[email protected]>
"True nobility lies not in being superior to another man, but in being
superior to one's previous self."