Office Support / Office 365 Admin / Domains

Service limitations when your hosting provider does not support SRV, CNAME, TXT, or redirection

   This article only applies to you if you manage your own DNS records. If you have changed your nameservers to point to Office 365, you can use any DNS hosting provider.

If you manage your own DNS records and your DNS host does not support all the DNS records that Office 365 needs, some Office 365 features won’t work. We recommend that you transfer your domain to a registrar that supports all required DNS records.

To see what won’t work if a specific record type isn’t supported at your provider, click the link for the record type:

Providers that support all required DNS records include the following

Dynadot

eNomCentral

Europe Registry

Go Daddy

Hover

MyHosting.com

Name.com

Nearly Free Speech

Nettica

Network Information Center (NIC)

Network Solutions

Register.com

You can transfer your domain from your current registrar to one of these providers.

Limitations if SRV records are not supported

If SRV records are not supported, the following Office 365 features are not available.

  • Skype for Business Online IM and presence integration with Outlook Web App

  • External communication (federation) with Skype for Business Online users in other organizations.

  • Public Internet Connectivity (PIC) with Skype for Business Online users signed in with a Microsoft account (formerly known as a Windows Live ID).

For more information about Skype for Business Online requirements, see Set up your network for Skype for Business Online.

Limitations if multiple CNAME records are not supported

Several domain hosting providers support only a single CNAME record. If your domain is hosted at a provider that doesn’t support multiple CNAME records, or if the service you've purchased for your domain with the provider does not support multiple CNAME records, you have to choose between the following features for Skype for Business Online:

  • Email desktop clients and mobile clients can use Autodiscover to automatically find the Exchange Online service so that users can sign in without having to enter a server name.

  • Skype for Business Online desktop clients can use Autodiscover to automatically find the Skype for Business Online service so that users can sign in without having to enter a server name.

  • Skype for Business Online mobile clients can use Autodiscover to automatically find the Skype for Business Online service so that users can sign in without having to enter a server name.

For more information about Skype for Business Online requirements, see Set up your network for Skype for Business Online.

Limitations if SPF/TXT records are not supported

If SPF/TXT records are not supported, other people may be able to use your domain to send spam or other malicious email. SPF records work by identifying the servers that are authorized to send email from your domain.

Limitations if redirection is not supported (when you manage your own DNS records)

If you manage DNS for your domain yourself at your domain's DNS host, and the DNS host does not support redirection, users won’t be able to get to your public website by typing your domain name without typing “www”; for example, http://contoso.com. Learn more about redirection.

Note    You can purchase redirection from another company and use it to redirect your website address without the “www” to your full website address, even if you keep your domain with a DNS host that doesn’t support redirection.

Applies To: Office 365 Admin, Office 365 Small Business Admin



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