Office Support / Office 365 Admin / Domains

Create DNS records at Yahoo! Small Business for Office 365

Caution   We recommend that you choose to have Office 365 manage your domain's DNS records. Or you could switch your domain to a different DNS host. If you continue to manage your DNS records at Yahoo! Small Business, there are significant service limitations with Office 365:

  • The Yahoo! Small Business website doesn’t support either SRV records or TXT records, which means that several Lync Online, Exchange Online, and Outlook Web App features won’t work.

If you choose to add the Office 365 DNS records for your domain at Yahoo! Small Business despite the service limitations, follow the steps in this article to set up your DNS records for email, Lync, and so on.

These are the main records to add. (Need more help? Get support.)

If you have a SharePoint Online Public Website, you can set it up to use your custom domain for the website URL address, like www.your_domain.com.

Note    Typically it takes about 15 minutes for DNS changes to take effect. However, it can occasionally take longer for a change you've made to update across the Internet's DNS system. If you’re having trouble with mail flow or other issues after adding DNS records, see Troubleshoot issues after changing your domain name or DNS records.

Add an MX record for verification

Before you use your domain with Office 365, we have to make sure that you own it. Your ability to log in to your account at your domain registrar and create the DNS record proves to Office 365 that you own the domain.

Note    This record is used only to verify that you own your domain; it doesn’t affect anything else. You can delete it later, if you like.

  1. Important   Before you begin this procedure, make sure that you are logged out of any other Yahoo accounts that you may have.

    To get started, go to your domains page at Yahoo! Small Business by using this link. You'll be prompted to sign in first.

    Yahoo-BP-Configure-1-1

  2. On the Domains page, in the section for the domain you're working with, choose Domain Control Panel.

    Yahoo-BP-Configure-1-2

  3. On the Domain Control Panel page, choose Manage Advanced DNS Settings.

    Yahoo-BP-Configure-1-3

  4. On the Advanced DNS Settings page, in the MX Records section, choose Change MX Records.

    (You may need to scroll down.)

    Yahoo-BP-Verify-1-1

  5. On the Domain Control Panel page, in the boxes for the new record, type or copy and paste the following values.

    Mailserver Hostname

    Priority

    MS=msXXXXXXXX.com

    Note   This is an example. Use your specific Destination or Points to Address value here, from the table in Office 365.
    How do I find this?

    Important   You MUST add .com to the end of this value, or Yahoo Small Business will reject it. For example, if the original value is ms40390435.msv1.invalid, you must change it to ms40390435.msv1.invalid.com before entering it.

    10

    For more information about priority, see What is MX priority?

    Yahoo-BP-Verify-1-2

  6. Choose Submit.

    Yahoo-BP-Verify-1-3

  7. Wait a few minutes before you continue, so that the record you just created can update across the Internet.

Now that you've added the record at your domain registrar's site, you'll go back to Office 365 and request Office 365 to look for the record.

When Office 365 finds the correct TXT record, your domain is verified.

  1. Go to the Manage domains page.

  2. On the Manage domains page, select your domain and then, in the Action column for the domain you are verifying, choose Start setup.

    O365-BP-Verify-1-2

  3. On the Add this TXT record to show you own domain_name page, choose Okay, I've added the record and then, in the confirmation dialog box, choose Finish.

    O365-BP-Verify-1-4

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Add an MX record so email for your domain will come to Office 365

  1. Important   Before you begin this procedure, make sure that you are logged out of any other Yahoo accounts that you may have.

    To get started, go to your domains page at Yahoo! Small Business by using this link. You'll be prompted to sign in first.

    Yahoo-BP-Configure-1-1

  2. On the Domains page, in the section for the domain you're working with, choose Domain Control Panel.

    Yahoo-BP-Configure-1-2

  3. On the Domain Control Panel page, choose Manage Advanced DNS Settings.

    Yahoo-BP-Configure-1-3

  4. On the Advanced DNS Settings page, in the MX Records section, choose Change MX Records.

    (You may need to scroll down.)

    Yahoo-BP-Configure-2-1

  5. On the Domain Control Panel page, in the boxes for the new record, type or copy and paste the following values.

    Mailserver Hostname

    Priority

    <domain-key>.mail.protection.outlook.com

    Note   Get your <domain-key> from your Office 365 portal account.
    How do I find this?

    10

    For more information about priority, see What is MX priority?

    Yahoo-BP-Configure-2-2

  6. Choose Submit.

    Yahoo-BP-Configure-2-3

  7. Delete any other MX records that are listed (including the one that you created for verification in the first section of this article) by selecting each record and then pressing the Delete key on your keyboard.

    Yahoo-BP-Configure-2-4

  8. Choose Submit.

    Yahoo-BP-Configure-2-5

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Add the four CNAME records that are required for Office 365

  1. Important   Before you begin this procedure, make sure that you are logged out of any other Yahoo accounts that you may have.

    To get started, go to your domains page at Yahoo! Small Business by using this link. You'll be prompted to sign in first.

    Yahoo-BP-Configure-1-1

  2. On the Domains page, in the section for the domain you're working with, choose Domain Control Panel.

    Yahoo-BP-Configure-1-2

  3. On the Domain Control Panel page, choose Manage Advanced DNS Settings.

    Yahoo-BP-Configure-1-3

  4. On the Advanced DNS Settings page, in the A and CNAME Records section, choose Add Record.

    (You may need to scroll down.)

    Yahoo-BP-Configure-3-1

  5. On the Domain Control Panel page, add the first of the four CNAME records:

    In the boxes for the new record, type or copy and paste the values from the first row of the following table.

    Important   Yahoo! Small Business automatically recognizes the entry as a CNAME record once you enter the required values into both the Source and Destination fields. (There is no means by which you need to explicitly specify the CNAME record type.)

    Source

    Destination

    autodiscover

    autodiscover.outlook.com

    sip

    sipdir.online.lync.com

    lyncdiscover

    webdir.online.lync.com

    msoid

    clientconfig.microsoftonline-p.net

    Yahoo-BP-Configure-3-2

  6. Choose Submit.

    Yahoo-BP-Configure-3-3

  7. Double-check your entry, and then choose Submit.

    Yahoo-BP-Configure-3-4

  8. Add each of the other three CNAME records:

    On the Advanced DNS Settings page, choose Add Record again, create a record using the values from the next row in the table, and then again choose Submit twice to complete that record.

    Repeat this process until you have created all four CNAME records.

  9. Important   If you have Mobile Device Manager (MDM), then you must create two additional CNAME records. Follow the procedure that you used for the other four CNAME records, but supply the values from the following table.

    (If you do not have MDM, you can skip this step.)

    Source

    Destination

    enterpriseregistration

    enterpriseregistration.windows.net

    enterpriseenrollment

    enterpriseenrollment.manage.microsoft.com

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Note    Typically it takes about 15 minutes for DNS changes to take effect. However, it can occasionally take longer for a change you've made to update across the Internet's DNS system. If you’re having trouble with mail flow or other issues after adding DNS records, see Troubleshoot issues after changing your domain name or DNS records.

Add a TXT record to help prevent email spam

Currently Yahoo! Small Business doesn’t support TXT records. Learn about this service limitation.

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Add the two SRV records that are required for Office 365

Currently Yahoo! Small Business doesn’t support SRV records. Learn about this service limitation.

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Still need help?

Get help from the Office 365 community forums Admins: Sign in and create a service request Admins: Call Support

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



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