Forum Discussion
What is the domain "nrb.footprintdns.com"??
The domain nrb.footprintdns.com is owned by Microsoft and represents servers in Microsoft datacenters. It is used for telemetry purposes that comply with Microsoft privacy commitments that you can read about at: https://products.office.com/en-us/business/office-365-trust-center-privacy. Data sent to this domain is used to identify network connectivity and performance issues and to support improvements to the service. We have plans to rename it to be more descriptive, and to publish it at the Office 365 IP Address and URL publishing site at http://aka.ms/o365ip. If you have any problems using Office 365 related to this, please raise a support incident so that we can assist at https://support.office.com/
I cannot comment on Sharepoint, Word, Excel etc etc etc but I did notice it when using Outlook 365. Noticing this certificate issue for myself on my computer, I did some research and discovered that if you turn off the "Coming Soon" button in the top right corner of Outlook, the "Invalid Certificate" issue went away.
It seems to me that by activating this part of office, it is allowing Microsoft to send adverts about their products. I am lucky that I am using Windows 7 where that OS was never designed to be one large advertising platform where Windows 10 is.
I haven't investigated too deeply but after seeing this thread, I though I would give my 2 cents worth. I hope it helps some people out.
Cheers.