Deliverability Expert Chris Truitt was kind enough to reach out to me after he noticed my prior post lamenting the lack of guidance on what you should do with Microsoft SNDS data. Here are his suggestions for what you should be thinking about when looking at Microsoft SNDS data. Thanks, Chris! -- Al Iverson
ARS Technica reports on Trump minister of propaganda (I think that's his title) Sean Spicer and how he registered a handful of domains a few years ago with his still-current contact information, including his still-current phone number.
Microsoft Hotmail / Outlook.com's SNDS (Sender Network Data Services) portal is a useful interface where you register to be able to look up reputation data specific to your sending IP addresses. In my "How to troubleshoot Microsoft Outlook.com / Hotmail Delivery Issues" article, I suggest signing up for it.