Spam Resource: All Things Deliverability

Since I've enabled a "reject" DMARC policy on my domains, I've been reviewing the various failure reports that come in to see what crazy spam those crazy spammers might try to send. Amazingly, they are willing to try to send some really bad stuff to see if it …

Mashable's Chris Taylor talks about the problem of misdirected emails . A good read and it helps to expose a real issue that I don't think many people stop and consider. I'll add my own questions here. What if, because of this, a sender is exposing PII (personally…

I've long had a little banner at the bottom of my xnnd.com DNS tools site that says "since 2008" but it looks like I'm going to have to change that. Looking through my notes, the site actually launched eleven years ago today! XNND exists because back then t…

Remember this blast from the past? Back in 2007, email expert John Levine sat down with Canada's CBC News to be interviewed for what became "Spam, the Documentary." It wasn't widely available in the US then, but appears to be viewable on YouTube right now. …

How do I keep my email messages out of Gmail's Promotional tab? This is a common question lately. Is there one common answer? Ask six different people, and you'll get six different answers. And I'm not sure which answer is the best one, so I'll collect them here…

Here's the updated DOOM WARNING that appears on a suspicious message in the new Gmail user interface. But why, I ask, would it appear on this particular message that I received? The message in question fully authenticates, it was sent from a reputable ISP, and it was an em…

Here's a neat DMARC trick that I would have implemented sooner, had I read MAAWG's " Best Practices for Parked Domains " document a little closer back when it came out back in late 2015. But back then, I wasn't as DMARC savvy as I was now. Anyway, the tr…