Planning for DNS records
If you’re reading this book in chronological order, you’re already familiar with the importance of DNS records from the perspective of enabling a Microsoft 365 tenant. In Chapter 1, you learned how Microsoft 365 uses TXT DNS records to show proof of ownership for domains. Exchange Online is no different; in fact, every domain you add as part of the domain verification process is automatically added as an accepted domain and made available to use in Exchange Online.
In addition to the TXT records used to verify domain ownership, Exchange Online also employs several other DNS records:
Record type |
Hostname |
Target or value |
Purpose or Description |
CNAME |
autodiscover |
autodiscover.outlook.com |
Helps messaging clients locate... |