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In this configuration consumers would only be able to send outgoing email to outgoing servers. These servers would be able to deliver it to the incoming servers, which makes it available for pickup. Spam bots can't talk to incoming servers as they are blocked on port 25. Spam bots also can't talk to incoming servers because they aren't listening on port 25. And spam bots can't send on outgoing servers because they would require a password and the virus wouldn't know the password.
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Sender -- port 587 --> Outgoing SMTP Server -- port 25 --> Incoming SMTP Server -- port 143 IMAP --> Recipient
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Using IMAP as an outgoing transport to SMTP server
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As stated above end users need protecting from predators. If ISPs provided firewalls / NAT by default to end users through the Cable/DSL modems it would eliminate incoming hacker traffic. So even if the end user were running a hot unpatched copy of Windows they would be protected from becoming a hazard to the internetInternet.
DNS based admin lookup
There should be some way to look up the admin of any IP address so that you can get a message to them that there are spammers in their IP space. I think this should be done with some sort of DNS TXT lookup. But if people who know about problems can communicate with those who can fix the problem then the problem might get fixed sooner.
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End of Marc Perkel section. I'm putting my name in this because I tend to write in the first person and wanted to clarify it. Also if someone wants to work with me to develop these ideas feel free to \[mailto:marc@perkelsupport@junkemailfilter.com contact me\]. Some people might not agree with everything I posted here and I may be wrong and there may be better ideas out there. But this was meant to stimulate thought in the hopes that some part of this rant will lead to the future development of Spam Assassin and related spam fighting pools. |
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Post your innovative ideas here.