American Airlines and UPS Spam Breaching Postini Filters – Automatic Updates to Filters Expected

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If you have received either the UPS Confirmation email or the American Airlines Order ID messages, you are not alone. Currently spam filters across the world are frantically adjusting their heuristics to combat these spam messages. While the filters are being automatically updated, we would recommend enabling a attachment filter to block these messages NOTE: If [...]

MxToolBox Email Header Analyzer Makes Email Headers Readable

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Our Email Header Analyzer has been around for a few years but we have recently polished it to include a few more cool features. Email Headers can be a real challenge to decipher which is why we developed this tool in the first place. In simple terms, it makes email headers as readable as the [...]

Other Email Bounce Backs and Their Meanings

Bounce backs and error codes for email can be very mysterious and misleading. To help better understand them,we have started a new series on the blog dedicated to demystifying these occurrences. To read all of the blogs in this series please follow this link. We’ve already covered a few of the different types of bounce [...]

Attack of Zeus, Win32/Zbot – Malware/Trojan Horse

We have noticed an uptick of inquires on our site about the Trojan Horse Zues Win32/Zbot. This bot was originally discovered in January 2010 but appears to be rearing its ugly head again with a vengeance. Zeus is a banking malware trojan, and specializes in stealing personal information (passwords, account information, etc) from interactions with [...]

Non-Delivery Report (NDR) Spam or Backscatter Spam

Bounce backs and error codes for email can be very mysterious and misleading. To help with that we have started a new series on the blog dedicated to demystifying these occurrences. To read all of the blogs in this series, go here. In our continuing blog series about bounce backs and error codes we wanted [...]