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Spamhaus publicly released its new Domain Block List (DBL)1 earlier this week, after beta testing it for much of last year. They claim they have had ‘exceptionally positive’ results from the testing, and the premise is really quite interesting. Up to now, people have been using separate tools to verify different parts of email messagesRead more

WHOIS (for those unfamiliar with it) is a system that provides free public access to domain name registration. Every domain name has to be registered with the following information: the registrants name, an administrative contact, a technical contact, and the name servers associated with each domain name. Its all about traceability. But “ human natureRead more

‘Last time out I suggested sentencing spammers to some quality time in a maximum security cell with an ex-biker named ‘Tiny.’ But I think that’s too good for these people. They should be strung up by their thumbs and forced to watch ShamWow infomercials and Rick Astley videos until their ears bleed.’ Robert Cringely, InfoWorldRead more

Another year has passed and it seems everyone is busy publishing their year-end security reviews, survey results, and fearless predictions for the upcoming year. Everyone agrees that the spam and phishing rates were up last year, and, according to Pingdom’s ‘Internet 2009 in numbers1 ,’ there were 90 trillion emails sent last year, of whichRead more

In an earlier post, I had written about the various security measures to take to prevent losing your good reputation. But what happens if you find yourself on someone’s blacklist? What do you do? The first step is to carefully read the contents of the bounce messages returned by the blocking mail servers. Bounces typicallyRead more