Create DNS records at Yahoo! Small Business for Office 365

Caution    If you’re using Office 365 Small Business, we recommend that you choose to have Office 365 manage your DNS records. No matter which Office 365 plan you use, if you manage your DNS records at Yahoo! Small Business, there are significant service limitations, and you may want to switch to a different DNS hosting provider:

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

If you choose to manage your own Office 365 DNS records 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.

To get started, you need to find the DNS records for your domain at the Yahoo! Small Business website so you can update them.

These are the main records to add:

If you haven't yet verified your domain, you'll also need to add a record to do that:

If you have a SharePoint Online Public Website, you can set it up to use your custom domain.

Note    Typically it takes about 15 minutes for DNS changes to take effect. However, it can take up to 72 hours for a changed record to propagate through the DNS system. If you’re having trouble adding DNS records, see Troubleshoot issues after changing your domain name or DNS records.

Find your DNS records at the Yahoo! Small Business website

Task

What you’ll see

Go to the page that has the DNS records for your domain.

  1. In your browser, go to your domains at Yahoo! Small Business and sign in.

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

  3. On the Domain Control Panel page, scroll to the Edit Domain Locking section.

    If your domain is currently locked, use these steps to unlock it:

    1. Choose Edit Domain Locking, and then choose Unlock Domain.

    2. Choose Unlock Domain.

    3. On the Domain Locking page, choose Return to Domain Control Panel.

  4. In the Domain Name section on the Domain Control Panel page, choose Manage Advanced DNS Settings.

    The Advanced DNS Settings page opens.

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Add MX record

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

Task

What you’ll see

The MX record you'll add includes a value (the Points to address value) that looks something like this: <MX token>.mail.protection.outlook.com, where <MX token> is a value like MSxxxxxxx.

  1. On the Yahoo! Small Business website, go to the Advanced DNS Settings page.

    To find the Advanced DNS Settings page (and to unlock your domain if it is currently locked), see Find your DNS records at Yahoo! Small Business.

  2. Scroll down to the MX Records section, and then choose Change MX Records.

    Now you'll go to the Office 365 portal to get the MX value that you need.

  3. Sign in to Office 365 with your work or school account.

  4. Go to the Manage domains page.

  5. On the Manage domains page , choose Complete setup.

    Note   If you have already started this process, but not yet completed it, choose Fix issues instead.

  6. Follow the steps in the wizard and then, in the MX record section, copy the value listed under Points to address.

    You'll use this value in the record you're creating on the Yahoo! Small Business site, as described in the next step.

  7. In the new record on the Yahoo! Small Business Change your MX records page, make sure that the fields are set to precisely the following values:

    • Mailserver Hostname: Paste the Points to address value that you just copied from Office 365 here.

    • Priority: use 10.

      (This is the highest priority.)

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

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Remove any obsolete MX records.

If you have any old MX records for this domain that route email somewhere else:

  1. On the Change Your MX Records page, select each old record, and then press the Delete key.

  2. Choose Submit.

If you’re done making domain changes, lock your domain.

  1. At the top left on the Advanced DNS Settings page, choose Domain Control Panel.

  2. Choose Edit Domain Locking.

  3. Choose Lock Domain.

  4. On the confirmation page, choose Lock Domain again.

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Add CNAME records

Add the four CNAME records that are required for Office 365. If additional CNAME records are listed in Office 365, add those following the same general steps shown here.

Task

What you’ll see

Add the email (Exchange) Autodiscover CNAME record.

  1. On the Yahoo! Small Business website, go to the Advanced DNS Settings page.

    To find the Advanced DNS Settings page (and to unlock your domain if it is currently locked), see Find your DNS records at Yahoo! Small Business.

  2. In the A and CNAME Records section, choose Add Record.

  3. In the new record, make sure that the fields are set to precisely the following values:

    • Source: autodiscover

    • Destination: autodiscover.outlook.com

  4. Choose Submit, and then confirm your changes by again choosing Submit.

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Add the Lync SIP CNAME record.

  1. On the Yahoo! Small Business website, go to the Advanced DNS Settings page.

    To find the Advanced DNS Settings page (and to unlock your domain if it is currently locked), see Find your DNS records at Yahoo! Small Business.

  2. In the A and CNAME Records section, choose Add Record.

  3. In the new record, make sure that the fields are set to precisely the following values:

    • Source: sip

    • Destination: sipdir.online.lync.com

  4. Choose Submit, and then confirm your changes by again choosing Submit.

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Add the Lync Autodiscover CNAME record.

  1. On the Yahoo! Small Business website, go to the Advanced DNS Settings page.

    To find the Advanced DNS Settings page (and to unlock your domain if it is currently locked), see Find your DNS records at Yahoo! Small Business.

  2. In the A and CNAME Records section, choose Add Record.

  3. In the new record, make sure that the fields are set to precisely the following values:

    • Source: lyncdiscover

    • Destination: webdir.online.lync.com

  4. Choose Submit, and then confirm your changes by again choosing Submit.

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Add the additional CNAME record that is required for Office 365.

  1. On the Yahoo! Small Business website, go to the Advanced DNS Settings page.

    To find the Advanced DNS Settings page (and to unlock your domain if it is currently locked), see Find your DNS records at Yahoo! Small Business.

  2. In the A and CNAME Records section, choose Add Record.

  3. In the new record, make sure that the fields are set to precisely the following values:

    • Source: msoid

    • Destination: clientconfig.microsoftonline-p.net

  4. Choose Submit, and then confirm your changes by again choosing Submit.

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If you’re done making domain changes, lock your domain.

  1. At the top left on the Advanced DNS Settings page, choose Domain Control Panel.

  2. Choose Edit Domain Locking.

  3. Choose Lock Domain.

  4. On the confirmation page, choose Lock Domain again.

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Add TXT record for SPF

Add the SPF TXT record for your domain to help prevent email spam.

Task

What you’ll see

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

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Add SRV records

There are two SRV records to add for Office 365.

Task

What you’ll see

Add the SIP SRV record for Lync web conferencing.

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

Add the SIP SRV record for Lync federation.

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

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Add a record at Yahoo! Small Business to verify that you own the domain, if you haven’t already

Before you add the DNS records to set up your Office 365 services, Office 365 has to confirm that you own the domain you’re adding. To do this, you add a record at Yahoo! Small Business, following the steps below.

Note    This record is used only to verify that you own your domain; it doesn’t affect anything else.

Task

What you’ll see

Gather information from Office 365.

  1. Sign in to Office 365 with your work or school account.

  2. Go to the Manage domains page.

  3. On the Manage domains page, in the Action column for the domain that you are verifying, choose Start setup.

    Note   If you haven’t yet added a domain, see Add your domain to Office 365.

  4. On the Add a domain to Office 365 page, choose Start step 1.

  5. On the Confirm that you own your_domain page, in the See instructions for performing this step with drop-down list, choose General instructions.

  6. From the table, copy the Destination or Points to Address value.

    Important   You’ll need to add .com to the end of this value when you paste it in during the next task.

    We recommend copying and pasting this value, so that all of the spacing stays correct.

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Add a mail exchanger record (MX record).

  1. On the Yahoo! Small Business website, go to the Advanced DNS Settings page.

    To find the Advanced DNS Settings page (and to unlock your domain if it is currently locked), see Find your DNS records at Yahoo! Small Business.

  2. Scroll down to the MX Records section.

  3. Choose Change MX Records.

  4. In the new record, make sure that the fields are set to precisely the following values:

    • Mailserver Hostname: Paste in the Destination or Points to Address value that you just copied from the table in Office 365, and add .com at the end of the value.

      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.

    • Priority: 10

  5. Choose Submit.

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If you’re done making domain changes, lock your domain.

  1. At the top left on the Advanced DNS Settings page, choose Domain Control Panel.

  2. Choose Edit Domain Locking.

  3. Choose Lock Domain.

  4. On the confirmation page, choose Lock Domain again.

Verify your domain in Office 365.

Important   Wait about 15 minutes before you do this, so the record you just created can update across the Internet.

Go back to Office 365 and follow the steps below to request a verification check. The check looks for the MX record you added to Yahoo! Small Business in the previous step. When it finds the correct MX record, the domain is verified.

  1. Go to the Manage domains page.

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

  3. On the Confirm that you own your_domain page, choose done, verify now and then, in the confirmation dialog box, choose Finish.

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



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