Video: How are service providers trying to stop outbound spam?
Video: Where does spam come from?
MailChannels CEO talks about outbound spam.
Groupon Phishing Scam
We investigated the spam reduction efficacy of proactive throttling (aka traffic shaping) versus connection blocking using a reputable blacklist.
MailChannels Blog is Back
SORBS is listing Amazon EC2's entire IP address space, causing major deliverability problems for Amazon EC2 customers.
We took a look at 9 million delivery attempts through one of our spam filters and compiled a list of the most common spam connection rejection messages.
Spammers appear to have changed their software so that it less often sends the QUIT command, as required by the RFC.
Techniques for solving the CPU load issues caused by encrypted spam are discussed.
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