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Analyzing The Inbox of a Spammer's Domain

Consider this scenario: you need a domain name for your site so you go to your favorite domain registrar's website and upon a quick search find that your third choice is actually available! You quickly pull your credit card and register the name. Everything is good and you can't wait to have your new domain start pointing to your site and represent your official email address. But not so fast -- some of the recent events are revealing that, these days, when you are registering a domain name there is one more critical thing you need to do: check under the hood! more

Fight Spam With the DNS, Not the CIA

It seems like spam is in the news every day lately, and frankly, some of the proposed solutions seem either completely hare-brained or worse than the problem itself. I'd like to reiterate a relatively modest proposal I first made over a year ago: Require legitimate DNS MX records for all outbound email servers.

MX records are one component of a domain's Domain Name System (DNS) information. They identify IP addresses that accept inbound email for a particular domain name. To get mail to, say, linux.com, a mail server picks an MX record from linux.com's DNS information and attempts to deliver the mail to that IP address. If the delivery fails because a server is out of action, the delivering server may work through the domain's MX records until it finds a server that can accept the mail. Without at least one MX record, mail cannot be delivered to a domain.
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