Its good to see that Earthlink (one of the country's larger ISPs) is restricting their email servers on their end.
What are ISPs doing to prevent spam?
1. Configuring their servers so that they aren't relays (only accepts incoming email for mailboxes on their servers).
2. Requiring internal clients to authenticate when they do send mail (like what Earthlink is currently phasing in).
3. Restricting access to send email only from their own mail servers. They do this by blocking the outgoing mail port from all other computers.
Its a start. Personally, I'd rather just see spammers tar and feathered.
Aaron
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