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Monthly Archives: January 2018

AOL Changes

We’ve known for a while that AOL email infrastructure is going to be merging with Yahoo’s, but apparently it’s happening sooner than anyone expected. The MXes for aol.com will be migrated to Yahoo infrastructure around February 1st. Reading between the lines I expect that this isn’t a flag day, and much of the rest of […]

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Tempo

When we say that you might just be sending too much email and fatiguing or annoying the recipient into unsubscribing or hitting spam, this is the sort of thing we mean. Three emails (to the same email address) in four minutes might be a bit much. If you can’t combine the content you want to […]

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That’s not how you do it…

Got an email this morning from a company advertising their newest webinar “The Two Pillars of Effective Large-Scale Email: Security and Deliverability.” The message came to a tagged address, so clearly I’d given them one at some point. But I didn’t recognize the name or company or anything. I did a search to seen when […]

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Oh, Microsoft

Things have been a little unsettled at Microsoft webmail properties over the last few months. A number of ESPs reported significantly increased deferrals from Microsoft properties starting sometime late in November. Others saw reduced open rates across their customer base starting in late October. More recently, people are noticing higher complaint rates as well as an […]

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That Should Be A Word

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What … is your name?

For some reason otherwise legitimate ESPs have over the years picked up a habit of obfuscating who they are. I don’t mean those cases where they use a customers subdomain for their infrastructure or bounce address. If the customer is Harper Collins then mail “from” @bounce.e.harpercollins.com sent from a server claiming to be mail3871.e.harpercollins.com isn’t unreasonable. (Though […]

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Meltdown & Spectre, Oh My

If you follow any infosec sources you’ve probably already heard a lot about Meltdown and Spectre, Kaiser and KPTI. If not, you’ve probably seen headlines like Major flaw in millions of Intel chips revealed or Intel sells off for a second day as massive security exploit shakes the stock. What is it? These are all about a […]

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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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Happy 2018

This is the time of year when everyone starts posting their predictions for the coming year. Despite over a decade of blogging and close to 2500 blog posts, I have’t consistently written prediction articles here. Many years I don’t see big changes on the horizon, so there’s not a lot to comment on. Incremental changes […]

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