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Tag: whitelisting

A brief DMARC primer

DMARC stands for Domain-based Message Authentication, Reporting and Conformance. What DMARC does is allow domain owners to publish policy statements in DNS telling receiver domains what to do with messages that do not authenticate. In addition, DMARC introduces the concept of “domain alignment.” What this means is that the authentication has to be from the […]

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Looking for some experiences…

… with emailreg.org. A client of mine asked today if it was worth registering domains with emailreg.org as a whitelisting process. I’ve asked a few delivery folks for their feedback, but I was wondering what the broader email community thought. Does registering there help delivery to domains behind barracuda processes? Drop me a line on […]

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How difficult is it to get on whitelists?

Today’s question comes from Leslie J. Just how difficult is it for a small business that runs a highly compliant mailing system to find their way onto whitelists at the big freemail/spam filter providers? It seems utterly impossible meaning man hours are completely wasted messing around with subjects and content when if the same business sends the […]

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Marketing reports

Two marketing reports were reviewed today in other blogs. Stefan Pollard writes at the Merkle report showing that recipients really will add a sender’s address to their address book, but that they are picky about which senders they do this for. His article also provides a number of suggestions for how to be a sender […]

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Breaking through the script

In handling day to day issues I use the ISP designated channels. This means I frequently get dragged into long conversations with people, probably outsourced to the far east, who can do nothing beyond send me a boilerplate. This can be a frustrating experience when the issue you’re trying to deal with is not handled […]

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Getting whitelisted by endusers

One of the best ways to ensure mail is delivered to a recipients inbox is to encourage the recipient to add the senders from: address to their address book. In cases where an ISP might otherwise bulk folder the email, they will instead put the email into the inbox. Senders are changing their practices to […]

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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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