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Monthly Archives: November 2017

Catchall domains

Catchall domains accept any mail to any email address at that domain. They were quite common, particularly at smaller domains, a long time ago. For various reasons, most of them having to do with spammers, they’re less common now. Most folks think catchall domains are only used for spamtraps. As a consequence, many of the […]

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SendGrid IPO

Congrats to the folks at SendGrid for raising over 130 million in their IPO yesterday. Also, cool stock symbol, bro.  

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Spike in Yahoo error codes

A number of people have mentioned over the last couple weeks that they’re seeing a spike in Yahoo rejecting mail with 554    delivery error: dd Requested mail action aborted Discussions on various mailing lists indicate these messages are related to inactive accounts. Addresses that bounce at Yahoo with these codes should be handled as inactive […]

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Permission and B2B spam

Two of the very first posts I wrote on the blog were about permission (part 1, part 2). Re-reading those posts is interesting. Experience has taught me that recipients are much more forgiving of implicit opt-in than that post implies. The chance in recipient expectations doesn’t mean, however, that permission isn’t important or required. In fact, […]

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Today is one of those days I just want to argue with all the subject headers of the marketing email I get. — John Scalzi (@scalzi) November 10, 2017

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Subscription bombing and abuse prevention

A few weeks ago ProPublica was the victim of a subscription bomb attack. Julia Angwin found my blog post on the subject and contacted me to talk about the post. We spent an hour or so on the phone and I shared some of the information we had on the problem. Julie told me she […]

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Interacting in professional fora

There are a bunch of online communities – mailing lists, Slack channels, etc. – where “people who do email” interact. Some of them are open to anyone to subscribe, some of them are semi-private and require an invitation, others are closed and only available by invitation and yet others are associated with trade associations and […]

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Proofpoint acquires Cloudmark

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 […]

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October 2017: The Month in Email

October was a busy month. In addition to on boarding multiple new clients, we got new desks, I went to Toronto to see M3AAWG colleagues for a few days, and had oral surgery. Happily, we’re finally getting closer to having the full office setup.  What is an office without a Grover Cat? (he was so […]

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The Blighty Flag

Back in the dark ages (the late ’90s) most people used dialup to connect to the internet. Those people who had broadband could run all sorts of services off them, including websites and mail servers and such. We had a cable modem for a while handling mail for blighty.com. At that time blighty.com had an […]

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