Identify by Place
computer has an IP address. A Domain Name is how that address
is translated into a name, such as
Domain Naming is hierarchical. The name begins with the function.
Commercial domains use .com and educational ones use .edu.
Try it: Never Block Sender's Domain
screenshot on this page, the sample E-mail is from Microsoft.com, a
Never Block Sender's Domain.
You See? A pop up should confirm that the
sender of the selected message has been added to the Safe Sender
List. This option accepts E-mails from anyone from the @microsoft.com