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Monthly Archives: April 2020

Deliverability is nuanced

The deliverability discussion calls are going well and I’m going continue to host them on a biweekly basis. Next call will be May 6th, 5pm Ireland time, noon Eastern and 9am Pacific time. Still doing invites manually, so drop me an email at laura-ddiscuss@ the obvious domain. A few weeks ago, the discussion entered around […]

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Deliverability Discussion #3

Next deliverability discussion will be Wednesday April 22 at 5pm Ireland, Noon eastern, 9am pacific. As always, drop me a mail at laura-ddiscuss@ the obvious domain. I’m still thinking about the final topic. One of my ideas is a continuation of the machine learning discussion from last time. I think most large scale spam filters […]

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Machine learning resources

Thanks to everyone who joined the deliverability discussion on Friday. I realised after I scheduled that it was Good Friday and that may have limited some folks’ ability to join. This call we talked about Machine Learning and how it is applied to spam filters. Before the call I put together some resources in a […]

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Spamhaus DBL errors

Sometime in the last few days, Spamhaus seems to have started issuing a block message if someone queries the DBL with an IP address. folks started seeing an uptick in error messages that mention Spamhaus saying: 554 5.7.1 Service unavailable; Client host [x.x.x.x] blocked using dbl.spamhaus.org; No IP queries, see https://www.spamhaus.org/faq/section/Spamhaus%20DBL#279 (in reply to RCPT […]

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Whose side are you on?

A few weeks ago I was on an industry call. We were discussing some changes coming down the pike at the ISPs and filter providers. These changes are going to cause some headache at ESPs and other places that do email but don’t provide mailboxes. During the call I ended up explaining why what the […]

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Let’s do it again

Given the success of our initial call, let’s try it again. This time Friday April 10, 5pm Ireland time, 12 noon Eastern and 9am Pacific. Same as before, send me an email to laura-ddiscuss@ the obvious domain and I’ll send you an invite. I’m trying to move the days around to catch folks who couldn’t […]

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