on Dec 14, 2016This guide describes how to add an onmicrosoft.com tenant domain to your Office 365 Admin Center.
Applies To...
- New clients connecting with Mimecast using the Connect Application or Connect Process.
- Office 365 customers wanting to validate their onmicrosoft.com domain.
Walkthrough
Refer to the Adding additional domains to Office 365 Microsoft Office 365 knowledge base page whilst performing this task.
T
o validate your Office 365 tenant domain:
- Log in to your Office 365 Administration Portal.
- List your Domains.
- Click on the onmicrosoft.com domain.
- Add the domain using the following values:
- TXT Name: Enter a value of @.
- TXT Value: Paste the code generated in the Connect Application (Connect Application: Validating Your Domains) or Administration Console (Adding an Internal Domain).
- TTL: Leave the value of 1 hour.
- Click on the Save button.
Once the DNS propagation is completed, you'll be able to validate the domain. Once validated, it will appear in your account as an internal domain.
See Also...
DOCUMENTATION LOOP!!!
The "If you are not using the Connect Application" simply takes you to the general document for the Mimecast connect process, and not the step in that process which is relevant to validating your onmicrosoft.com domain.
Following that documentation you wind up at the https://community.mimecast.com/docs/DOC-1623 document (Configuring outbound Delivery Routing), the last step of which is "Adding the Office 365 Tenant Domain as an Internal Domain". The instructions for that step lead back to.......this article.
Also - I dunno about anybody else but in the new O365 Admin console as displayed in the screen cap, I don't get a button that says "New Custom Record". I had to go back to the old Admin console to add one.