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Tag: filter

Reading between the lines

Reading between the lines an important skill in deliverability. Why? Over the last few years there’s been an increasing amount of collaboration between deliverability folks at ESPs and ISPs. This is great. It’s a vast improvement on how things were 10 years ago. However, there are still ongoing complaints from both sides. There probably always […]

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Purchased lists aren’t always purchased

Spamhaus has listed a number of domains belonging to French politicians recently. In their blog post about it, they mention that the listings are directly related to address lists provided to candidates by the French government. We learned of this issue recently when two different French candidates became entangled in two of our automated spam […]

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Barracuda problems

Folks were posting earlier today noticing problems delivering to Barracuda hosted services. The good news is Barracuda has been updating their status page. As of now, the status page says things are improving. Monitoring – Since 7PM PDT 11/1/2016, the Barracuda Essentials for Email Security service has been experiencing a sustained and unusually large number of […]

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Do system administrators have too much power?

Yesterday, Laura brought a thread from last week to my attention, and the old-school ISP admin and mail geek in me felt the need to jump up and say something in response to Paul’s comment. My text here is all my own, and is based upon personal experience as well as those of my friends. That […]

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Politics and Delivery

Last week I posted some deliverability advice for the DNC based on their acquisition of President Obama’s 2012 campaign database. Paul asked a question on that post that I think is worth some attention. I am fascinated by the ramifications of email deliverability for political donations. Are there sysadmins at the big ISPs who make […]

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Deliverability and IP addresses

Almost 2 years ago I wrote a blog post titled The Death of IP Based Reputation. These days I’m even more sure that IP based reputation is well and truly dead for legitimate senders. There are a lot of reasons for this continued change.  Improved computing power I touched on the increase in computing power in […]

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The long tail of domains

I frequently get clients telling me that they have about 15 (20, 30) major domains on their list, and then a long tail of domains with only a couple of recipients. If you sort simply by the left hand side of the @, that’s true. When you’re sending email, it’s not just the domain in […]

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Holiday mailing advice from mailbox providers

Christine Borgia has a post on the Return Path blog where she interviews a number of different groups (spamfilters, DNSBLs, mailbox providers) about their filtering strategy for the holidays. Overall, no one changes their filtering during the Holiday Mailing Season. On the other hand, many marketers do change their marketing strategies in ways that trigger […]

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