Create DNS records at CSC for Office 365

Caution: The CSC website doesn't support SRV records, which means that several Skype for Business Online and Outlook Web App features won’t work. No matter which Office 365 plan you use, there are significant service limitations, and you may want to switch to a different DNS hosting provider.

If despite the service limitations, you choose to manage your own Office 365 DNS records at CSC, follow the steps in this article to verify your domain and set up DNS records for email and other services. Here’s how to set them up.

These are the main records to add.

  • Add a TXT record for verification

  • Add an MX record to route email

  • Add six CNAME records

  • Add a TXT record for SPF to help prevent email spam

After you add these records at CSC, your domain will be set up to work with Office 365 services.

To learn about webhosting and DNS for websites with Office 365, see Use a public website with Office 365.

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 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. To get started, go to your domains page in CSC by using this link. You'll be prompted to log in. In Select Application, choose CSCDomainManager.

    CSC_login_C3_2017111112457

  2. Under Portfolio Search, select Search to display all your domains.

    CSC_PortfolioSearch_C3_2017111112524

  3. In the search results, select the domain.

    CSC_SelectDomain_C3_2017111112545

  4. In Portfolio Actions, choose Manage Zone, and then choose Apply.

    CSC_ManageZone_C3_2017111112611

  5. In the Action column, choose Edit.

    CSC_Edit_C3_2017111112642

  6. Expand the TXT Records section.

    CSC_expandTXT_C3_2017111115113

  7. Choose Add Record.

    CSC_addRecord_C3_2017111115152

  8. In the boxes for the new record, type or copy and paste the following values.
     

    Record Type

    Key

    Time to Live (TTL)

    Value

    TXT

    @

    60 (Minutes)

    MS=msXXXXXXXX

    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?


    CSC_TXT_verificationValues_C3_2017111115233

  9. Select Save. The new TXT record appears in the TXT Records section with a green + icon.

  10. Select Preview Changes in the bottom right to submit your changes.

    CSC_PreviewChanges_C3_2017111121444

  11. Select Publish to complete the changes.

    CSC_Publish_C3_2017111121611

  12. Wait several 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. Choose Setup > Domains.

  2. On the Domains page, choose the domain that you are verifying.

    CSC_O365_selectDomain_C3_2017111121848

  3. On the Setup page, choose Start setup.

    CSC_O365_startSetup_C3_2017111121933

  4. On the Verify domain page, select Add a TXT record instead, and then choose Next.

    CSC_O365_AddTXTInstead_C3_2017111122045

  5. Choose Verify.

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 so email for your domain will come to Office 365

  1. To get started, go to your domains page in CSC by using this link. You'll be prompted to log in. In Select Application, choose CSCDomainManager.

    CSC_login_C3_2017111123236

  2. Under Portfolio Search, select Search to display all your domains.

    CSC_PortfolioSearch_C3_201711112331

  3. In the search results, select the domain.

    CSC_SelectDomain_C3_2017111123429

  4. In Portfolio Actions, choose Manage Zone, and then choose Apply.

    CSC_ManageZone_C3_2017111123537

  5. In the Action column, choose Edit.

    CSC_Edit_C3_2017111123610

  6. Expand the MX Records section. 

    CSC_expandMX_C3_2017111123651

  7. Choose Add Record.

    CSC_addRecord_C3_2017111124535

  8. In the boxes for the new record, type or copy and paste the following values.

    Record Type

    Key

    Time to Live (TTL)

    Value

    Priority

    MX

    @

    60 (Minutes)

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

    This value MUST end with a period (.)

    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?


    CSC_MX_Values_C3_2017111131254

  9. Select Save. The new TXT record appears in the TXT Records section with a green + icon.

  10. If there are any other MX records, delete them. To do this, select the row, select Delete Record, and then select Save.

  11. Select Preview Changes in the bottom right to submit your changes.

    CSC_PreviewChanges_C3_2017111131536

  12. Select Publish to complete the changes.

    CSC_Publish_C3_2017111131556

  13. Wait several minutes before you continue, so that the record you just created can update across the Internet.

Add the CNAME records that are required for Office 365

Follow the steps below.

  1. To get started, go to your domains page in CSC by using this link. You'll be prompted to log in. In Select Application, choose CSCDomainManager.

    CSC_login_C3_2017111131756

  2. Under Portfolio Search, select Search to display all your domains.

    CSC_PortfolioSearch_C3_2017111131915

  3. In the search results, select the domain.

    CSC_SelectDomain_C3_2017111132013

  4. In Portfolio Actions, choose Manage Zone, and then choose Apply.

    CSC_ManageZone_C3_201711113215

  5. In the Action column, choose Edit.

    CSC_Edit_C3_2017111132148

  6. Expand the CNAME Records section.

    CSC_expandCNAME_C3_2017111132228

  7. Choose Add Record.

    CSC_addRecord_C3_2017111132355

  8. In the boxes for the new record, type or copy and paste the following values.

    Record Type

    Key

    Time to Live (TTL)

    Value

    CNAME

    autodiscover

    60 (Minutes)

    autodiscover.outlook.com.

    This value MUST end with a period (.)

    CNAME

    sip

    60 (Minutes)

    sipdir.online.lync.com.

    This value MUST end with a period (.)

    CNAME

    lyncdiscover

    60 (Minutes)

    webdir.online.lync.com.

    This value MUST end with a period (.)

    CNAME

    msoid

    60 (Minutes)

    clientconfig.microsoftonline-p.net.

    This value MUST end with a period (.)

    CNAME

    enterpriseregistration

    60 (Minutes)

    enterpriseregistration.windows.net.

    This value MUST end with a period (.)

    CNAME

    enterpriseenrollment

    60 (Minutes)

    enterpriseenrollment.manage.microsoft.com.

    This value MUST end with a period (.)


    CSC_CNAME_Values_C3_2017111132434

  9. Select Save. The new record appears in the CNAME Records section with a green + icon.

  10. Repeat the previous steps to create the other five CNAME records. For each record, type of copy and paste the values from the next row of the table above into the boxes for that record.

  11. Select Preview Changes in the bottom right to submit your changes.

    CSC_PreviewChanges_C3_2017111132838

  12. Select Publish to complete the changes.

    CSC_Publish_C3_2017111132914

  13. Wait several minutes before you continue, so that the record you just created can update across the Internet.

Add a TXT record for SPF to help prevent email spam

Important: You cannot have more than CSC TXT record for SPF for a domain. If your domain has more than CSC SPF record, you'll get email errors, as well as delivery and spam classification issues. If you already have an SPF record for your domain, don't create a new CSC for Office 365. Instead, add the required Office 365 values to the current record so that you have a single SPF record that includes both sets of values. Need examples? Check out these details and sample SPF records. To validate your SPF record, you can use one of these SPF validation tools.

Follow the steps below.

  1. To get started, go to your domains page in CSC by using this link. You'll be prompted to log in. In Select Application, choose CSCDomainManager.

    CSC_login_C3_201711113355

  2. Under Portfolio Search, select Search to display all your domains.

    CSC_PortfolioSearch_C3_2017111133526

  3. In the search results, select the domain.

    CSC_SelectDomain_C3_2017111133547

  4. In Portfolio Actions, choose Manage Zone, and then choose Apply.

    CSC_ManageZone_C3_201711113364

  5. In the Action column, choose Edit.

    CSC_Edit_C3_2017111133634

  6. Expand the TXT Records section.

    CSC_expandTXT_C3_2017111133656

  7. Choose Add Record.

    CSC_addRecord_C3_2017111133716

  8. In the boxes for the new record, type or copy and paste the following values.

    Record Type

    Key

    Time to Live (TTL)

    Value

    TXT

    @

    60 (Minutes)

    v=spf1 include:spf.protection.outlook.com -all

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


    CSC_TXT_SPFvalues_C3_2017111133743

  9. Select Save. The new record appears in the TXT Records section with a green + icon.

  10. Select Preview Changes in the bottom right to submit your changes.

    CSC_PreviewChanges_C3_2017111133955

  11. Select Publish to complete the changes.

    CSC_Publish_C3_2017111134010

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.

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