In the series Virtualizing Domain Controllers on vSphere, I explained the importance of proper time synchronization for virtualized Active Directory Domain Controllers and how to keep these Domain Controllers on trusted vSphere hosts only. Recent versions of the VMware Tools have time synchronization disabled by default. This means the reliance on proper time on vSphere hosts … Continue reading "vSphere 7’s vMotion interface notifies for time differences between vSphere hosts"
Day: August 17, 2020
Field Notes: DKIM and missing selector records
During a project with one of my customers, I was tasked to look at a non-delivery report (NDR) for a mail message. The bounce error was pretty confusing, but after reviewing the headers, we noticed that the DKIM check had failed. This was a bit of a surprise, because the message was sent from Microsoft … Continue reading "Field Notes: DKIM and missing selector records"