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Tag: GT&U

Lessons from the good, the typical and the ugly

What can smart ESPs learn from my recent series The good, The typical and The ugly? Not every company that labels themselves legitimate email marketers actually implements good practices. Every example of an ugly ESP calls themselves legitimate marketers. In fact a fair number of spammers, those using botnets and breaking the law also describe […]

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And the ugly…

Getting back to my series on the good, the typical and the ugly in the ESP field, and there is some very ugly out there. I have 3 examples of the ugliness out there and what ESPs and legitimate senders are competing with. The fake ESP A spammer approached me early on in my consulting […]

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Typical ESPs

Yesterday, I gave examples of good ESPs and the benefits that their customers receive from their high standards and standards enforcement. Today I’ll be talking about typical ESPs and the things they say and do. A few caveats before I get started. Most of these quotes are composite quotes. I am not quoting one particular […]

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What makes a good ESP?

There are a number of things that make a responsible ESP, including setting and enforcing standards higher than those set by the ISPs. One of the responsible ESPs is Mailchimp. (Full disclaimer, I do consult for Mailchimp.) This ESP focuses on businesses with small to medium sized lists. They screen new customers for source of […]

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  • HE.net DNS problems

    Hurricane Electric had a significant outage of their authoritative DNS servers this morning, causing them to return valid responses with no results for all(?) queries. This will have caused delivery problems for any mail going to domains using HE.net DNS - which will include some of their colocation customers, as well as users of their free services - but also will have caused reverse DNS to fail for most servers hosted by Hurricane Electric worldwide, so if any of your mail is being sent from HE hosted machines you may have seen problems. (We're HE customers so we noticed. Still happy with them as a vendor.)No Comments


  • 65.0.0.0/8 DNS issues

    If you're sending email from any address beginning with a 65 - in 65.0.0.0/8 - it's possible you'll see some delivery problems. Something appears to be broken with dnssec signatures for the reverse DNS zone, leading queries for reverse DNS to fail for anyone using a dnssec aware DNS resolver (which is almost everyone).1 Comment


  • Our green bar certificate is going away

    Later today we'll be switching from an Extended Validation ("green bar") SSL certificate to a Domain Validation certificate. This isn't exactly a planned change but I'm waiting for responses from Comodo before I go into it too much. I'll share some more details next week.3 Comments


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