DNS Setup for Microsoft 365
Login to the Microsoft 365 admin center, and go to the Settings > Domains page.
Click the domain name you wish to send emails from.
The following instructions are for domains that have their DNS managed by Microsoft 365.
To create a CNAME record, click the New custom record button.
Select the CNAME (Alias) option from the Select DNS type drop-down menu.
Enter the Hostname we recommend into the Host name or Alias field.
Enter the Value that we advise for your CNAME record into the Points to address field, then click the Save button.
You can find the "Hostname" and "Value" on the Sending > Verified Senders > Sender domains section of your SMTP2GO Dashboard.
Repeat step 3 for each required CNAME record.