Major industry news today as Proofpoint and Cloudmark announced a major acquisition deal. Proofpoint agreed to pay $110 million in cash to acquire Cloudmark. Prior to this acquisition, Proofpoint focused on business filters. Cloudmark’s focus was selling into large ISPs, including large cable providers, and mobile carriers. Proofpoint assured investors they will continue to supporting and...
It seems one of the most asked questions I hear from people is about filters and what the secret sauce is. Cloudmark’s processes which determine which IPs get a poor or suspect reputation in our CSI products, take into account many different factors, including both spam trap hits and volume of trusted end user complaints (hitting the “This is spam” button), reputation of the reverse DNS of the...
Cloudmark Annual Global Messaging Threat Report. Nothing too surprising here, but useful for anyone in the email space to check out.
Last week I blogged about the changes at ISPs that make “ISP Relations” harder for many senders. But it’s not just ISPs that are making it a little more difficult to get answers to questions, some spam filtering companies are pulling back on offering support to senders. For instance, Cloudmark sent out an email to some ESPs late last week informing them that Cloudmark was...
Chris from Cloudmark tracks a UK text spammer.
Today is world IPv6 launch day. A group of ISPs, network hardware manufacturers and web companies permanently enabled IPv6 for their products and services. What’s this got to do with email? According to a post on the NANOG mailing list the very first email to arrive at the Comcast IPv6 mailserver was received a minute after the server was turned on. This email was spam and was caught by...
During MAAWG a number of companies in the email space announce new initiatives, mergers, products and the like. This MAAWG is no different. Spammers adjust to security trends. This is not really news, spammers have been adjusting to new security measures since folks started blocking from: addresses back in ’95 and ’96. The tactics are different and developing, but for every security...
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