Add multiple domains to Office 365

Contributors: Peter Baumgartner

Check the Domains FAQ if you don't find what you're looking for.

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Verify your domain

  1. Choose Settings, then Domains in the Office 365 Admin center. (Be sure to sign in to Office 365 first.)

  2. In the domains section, click Add domain to start the wizard.

  3. Add the domain you want to use, and click Next.

  4. Follow the steps in the wizard to add the record that verifies to Office 365 that you own the domain. You can also follow the link to step-by-step instructions for your registrar if you get stuck. Click Verify to continue.

Click Setup then Domains in the left navigation pane

Set up services automatically

To finish, you have to update some records at your DNS host or domain registrar. You can either use NS records and have Office 365 automatically set up the correct DNS records, or you can do it manually.

Automatic Setup:

  1. The wizard typically detects your registrar and gives you a link to step-by-step instructions for updating your NS records at the registrar website. If it doesn't, follow these general steps for changing NS records.

  2. Office 365 will automatically set up email and other services for you.

Manual DNS Set up

Choose this option if you know exactly what you're doing:

  • You're comfortable managing DNS settings

  • You have no questions about Office 365

  • You've administered similar services before

Check the drop-down menu for your DNS hosting provider and follow the instructions to update all the necessary DNS records.

If you donโ€™t know the DNS hosting provider or domain registrar for your domain, see Find your domain registrar or DNS hosting provider.

After your records are updated, click Finish to close the wizard.

You're done!


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