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Google makes connections

One of the client projects I’m working on includes doing a lot of research on MXs, including some classification work. Part of the work involves identifying the company running the MX. Many of the times this is obvious; mail.protection.outlook.com is office365, for instance.

There are other cases where the connection between the MX and the host company is not as obvious. That’s where google comes into play. Take the domain canit.ca, it’s a MX for quite a few domains in this data set. Step one is to visit the website, but there’s no website there. Step 2 is drop the domain into google, who tells me it’s Roaring Penguin software.
In some cases, though, the domain wasn’t as obvious as the Roaring Penguin link. In those cases, Google would present me with seemingly irrelevant hosting pages. It didn’t make sense until I started digging through hosting documentation. Inevitably, whenever Google gave me results that didn’t make sense, they were right. The links were often buried in knowledge base pages telling users how to configure their setup and mentioning the domain I was searching for.
The interesting piece was that often it was the top level domain, not the support pages, that Google presented to me. I had to go find the actual pages. Based on that bit of research, it appears that Google has a comprehensive map of what domains are related to each other.
This is something we see in their handling of email as well. Gmail regularly makes connections between domains that senders don’t expect. I’ve been speaking for a while about how Gmail does this, based on observation of filtering behavior. Working through multiple searches looking at domain names was the first time I saw evidence of the connections I suspected. Gmail is able to connect seemingly disparate hostnames and relate them to one another.
For senders, it means that using different domains in an attempt to isolate different mainstreams doesn’t work. Gmail understands that domainA in acquisition mail is also the same as domainB in opt-in mail is the same as domainC in transactional mail. Companies can develop a reputation at Google which affects all email, not just a particular mail stream. This makes it harder for senders to compartmentalize their sends and requires compliance throughout the organization.
Acquisition programs do hurt all mail programs, at least at Gmail.

Happy 2018

This is the time of year when everyone starts posting their predictions for the coming year. Despite over a decade of blogging and close to 2500 blog posts, I have’t consistently written prediction articles here. Many years I don’t see big changes on the horizon, so there’s not a lot to comment on. Incremental changes are status quo, nothing earth shattering there. But I’ve been thinking about what might be on the horizon in 2018 and how that will affect email marketing.

Authentication is about Identity, not Virtue

I just got some mail claiming to be from “Bank of America <secure@bofasecure.com>”.
It passes SPF:

Organizational Domain

We often want to know whether two hostnames are controlled by the same person, or not.

November 2017: The Month in Email

We’re in the thick of the busiest time of the year for email. It’s been so busy, in fact, that we’ve seen some slowdowns and delivery issues across the email universe. It may be worth thinking about alternate strategies for end of year promotions beyond Black Friday and Cyber Monday.
I was delighted to chat with Julia Angwin for her ProPublica piece on subscription bombing and abuse prevention. Her piece is a good introduction to the topic, and very much worth reading.
ICYMI, I did a rough analysis of the data from our survey on Google Postmaster Tools. Stay tuned for more insights when I have a moment to explore this further.

[#INFOGRAPHIC] Email marketing trends 2018

It’s always an honor to be asked to provide quotes and thoughts with experts in the field. Sometimes the day to day gives me tunnel vision, but things like this give me the opportunity to think more globally. Hands down, though, the best part is seeing the final product and hearing what other folks have to say.
Go check out the full infographic.

About that DMARC "exploit"

A security researcher has identified a rendering flaw that allows for “perfect” phishing emails. From his website:

Deliverability is critical for marketing

It is increasingly clear that successful email marketing programs measure and emphasize deliverability. No longer is deliverability the crisis management team called when everything breaks. They’re part and parcel of an effective email marketing team.
Today I watched a bit of the EIS livestream where acquisition marketers were discussing their processes. Everyone of them talked about things that are critical for deliverability as core to their business.

Microsoft MXs changed over

Today on MailOp it was announced that the migration of Microsoft freemail domains to the office 365 backend. Over the next week the mx*.hotmail.com mail servers will stop working. Check your settings, folks, and make sure you’re correctly querying DNS before sending.

Vodafone New Zealand: sorta shutting down

Vodafone NZ is shutting down mail handling for the following domains as of today, Nov 30, 2017.