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Domains

Office 365
 

Applies to: Office 365

Topic Last Modified: 2014-06-19

How you manage your custom domain depends on which Office 365 plan you subscribe to. For information about setting up domains, see:

To use your own domain name with Office 365 instead of the domain name that you were given at signup, you add the domain to Office 365.

You can add up to 900 domains to your Office 365 subscription. However, you can’t add a domain to Office 365 that you’re already using in another Microsoft cloud service. That means that you can’t add the same domain to multiple Office 365 subscriptions.

With Office 365 Enterprise and Office 365 Midsize Business, you can add any level domain, including third-level domains such as marketing.contoso.com.

With Office 365 Small Business, you can add second-level domains such as contoso.com or contoso.co.uk. Note that you can’t add third-level or greater domains, such as marketing.contoso.com.

Before you can use a custom domain with Office 365, you must verify that you own the domain by adding a DNS record at your DNS hosting provider. For more information, see Create DNS records for Office 365, or Verify your domain and change name servers for Office 365 Small Business.

The options for how to manage your DNS records depend on your Office 365 plan:

  • Office 365 Enterprise and Office 365 Midsize Business   You manage all your DNS records at your DNS hosting provider, and change specific records to point to Office 365 services as needed. For more information, see Create DNS records for Office 365.

  • Office 365 Small Business   You have a choice: you can set it up so that Office 365 creates and hosts your DNS records, or you can manage all your own DNS records at your DNS hosting provider.

    • If Office 365 hosts your DNS records, you must use Office 365 for email and IM. To add or edit custom DNS records, you use the Office 365 admin center.

    • If you manage your own DNS records at your DNS hosting provider, you can use different providers for email and IM. You make any changes to DNS records at your DNS hosting provider’s website.

    If you manage your own DNS records at your DNS hosting provider, and your domain is registered at Go Daddy, Office 365 can create the required records for you at Go Daddy. No matter where your DNS records are hosted, you can set up the DNS records to use a public website hosted on Office 365 or with a different hosting provider.

Office 365 proactively checks your DNS records to find and help fix DNS issues. If your DNS records don’t match what we expect them to be, you’ll receive a notification in the Office 365 admin center, along with information that tells you how to fix the possible issues that have been identified.

For more information, see How Office 365 manages DNS records.

You can pilot Office 365 with some email addresses for a domain on Office 365, and some on your previous email provider. This is recommended only for use during a pilot of Office 365, as it requires additional setup steps and has some limitations for Office 365 services. For more information, see:

 

Feature

Office 365 Small Business

Office 365 Small Business Premium

Office 365 Midsize Business

Office 365 Enterprise E1

Office 365 Education A2

Office 365 Government G1

Office 365 Enterprise E3

Office 365 Education A3

Office 365 Government G3

Office 365 Enterprise E4

Office 365 Education A4

Office 365 Government G4

Office 365 Enterprise K1

Office 365 Government K1

Add custom 2nd-level domains, like fourthcoffee.com

Yes

Yes

Yes

Yes

Yes

Yes

Yes

Add custom 3rd-level domains, like marketing.fourthcoffee.com

No

No

Yes

Yes

Yes

Yes

Yes

Add up to 900 custom domains

Yes

Yes

Yes

Yes

Yes

Yes

Yes

DNS records managed by Office 365 (full redelegation)

Yes

Yes

No

No

No

No

No

DNS records managed at your DNS hosting provider (partial redelegation)

Yes1

Yes1

Yes

Yes

Yes

Yes

Yes

Use name.onmicrosoft.com domain or a custom domain name for email addresses and Lync Online

Yes

Yes

Yes

Yes

Yes

Yes

Yes

Use name-public.sharepoint.com or a custom domain name for your SharePoint Online Public Website

Yes2

Yes2

Yes2

Yes2

Yes2

Yes2

Yes2

Use name.sharepoint.com for your team site

Yes

Yes

Yes

Yes

Yes

Yes

Yes

Use a custom domain name for your team site

No

No

No

No

No

No

No

Host a public website with a different provider

Yes

Yes

Yes

Yes

Yes

Yes

Yes

Use a different provider for email and IM

Yes1

Yes1

Yes

Yes

Yes

Yes

Yes

Host multiple SharePoint Online Public Websites with custom domain names

No2

No2

No2

No2

No2

No2

No2

Domain ownership verification required for custom domains

Yes

Yes

Yes

Yes

Yes

Yes

Yes

Automated domain purchase and domain verification available for domains purchased through Go Daddy

Yes

Yes

Yes

Yes

Yes

Yes

Yes

NoteNote:
1   In Office 365 Small Business and Office 365 Small Business Premium, you have a choice between having Office 365 manage your DNS records (full redelegation) and managing your own DNS records (partial redelegation). If you choose to have Office 365 manage your DNS records, you can’t use a different provider for email or IM.
2   You can have only one Public Website with Office 365, unless you’ve upgraded from an earlier version of Office 365. In that case, you have two Public Websites, but only one of them can be hosted with a custom domain name. For more information about working with the two websites for Small Business subscriptions, see Work with your two Office 365 Public Websites. If you have a different subscription, learn more about public websites at Public Website help for Office 365.

If you have comments or questions about this topic, we'd love to hear from you. Just send your feedback to Office 365 Service Description Feedback. Your comments will help us provide the most accurate and concise content.

 
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