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Tag: domain reputation

Let’s Talk: Reputation

The next 3 or 4 Let’s Talk sessions are going to be all about reputation. We’ll start with a general overview of reputation and identity, then move on to specific kinds of reputation (IP, domain, URL, content), then we’ll talk about how to create, maintain and repair reputation. Still working on the outline, but I’m […]

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What’s a suspicious domain?

The question came up on slack and I started bullet pointing what would make a domain suspicious. Seemed like a reasonable blog post. In no particular order, some features that make a domain suspicious to spam filters. Domain is used in… … mail users complain about … mail users delete without reading … mail sent […]

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Google makes connections

One of the client projects I’m working on includes doing a lot of research on MXs, including some classification work. Part of the work involves identifying the company running the MX. Many of the times this is obvious; mail.protection.outlook.com is office365, for instance. There are other cases where the connection between the MX and the […]

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Back from MAAWG

Had an all too short trip to M3AAWG. It was great to see old friends and meet new folks. I have lots to talk about and a poll to get into the field once I get caught up on client work. While I’m deep in the depths of my inbox, I thought I’d share a […]

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Filtering by gestalt

One of those $5.00 words I learned in the lab was gestalt. We were studying fetal alcohol syndrome (FAS) and, at the time, there were no consistent measurements or numbers that would drive a diagnosis of FAS. Diagnosis was by gestalt – that is by the patient looking like someone who had FAS. It’s a […]

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Domain transparency