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You can add your own custom domain name to Office 365 and use it to personalize user names, email addresses, and websites. Before you can use the custom domain, you have to prove that you own it by creating a special DNS record. After you set up the record, we’ll run a query to verify that the record exists, and you’ll be ready to go.
Before you start, make sure you’re ready:
Ready? Follow these steps:
If you know that your organization already owns a domain, but you’re not the person who set it up, follow the steps in this article to find your domain registrar or DNS hosting provider.
Follow the steps in I can’t add or verify my domain and get the instructions for your registrar. The record that you have to add is shown in the admin portal. You have two choices: create a TXT record or create an MX record. Some registrars don’t support TXT records, so you’ll create the MX record instead. These records are used only to prove that you own the domain and don’t redirect your mail or any other services.
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