Create DNS records at Active24 for Office 365

If Active24 is your DNS hosting provider, follow the steps in this article to verify your domain and set up DNS records for email, Skype for Business Online, and so on.

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

After you add these records at Active24, your domain will be set up to work with Office 365 services.

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 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 at Active24 by using this link. You'll be prompted to Log In first.

    Active24-BP-Configure-1-1

  2. On the Customer center page, in the Domain overview section, choose the name of the domain that you want to edit.

    Active24-BP-Configure-1-2

  3. Under Domain details: domain_name, choose DNS administration.

    Active24-BP-Configure-1-3

  4. On the Customer center page, in the Add record section, choose TXT.

    Active24-BP-Verify-1-1

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

    Name

    TTL

    Text

    (Leave this field empty.)

    3600

    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?

    Active24-BP-Verify-1-2

  6. Choose Create.

    Active24-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 Domains page.

  2. On the Manage domains page, select the domain that you are verifying and then, in the Action column for that domain, 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.

    O365-BP-Verify-1-3

  4. Choose Next.

    O365-BP-Verify-1-4

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

  1. To get started, go to your domains page at Active24 by using this link. You'll be prompted to Log In first.

    Active24-BP-Configure-1-1

  2. On the Customer center page, in the Domain overview section, choose the name of the domain that you want to edit.

    Active24-BP-Configure-1-2

  3. Under Domain details: domain_name, choose DNS administration.

    Active24-BP-Configure-1-3

  4. On the Customer center page, in the Add record section, choose MX.

    Active24-BP-Configure-2-1

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

    Name

    TTL

    Priority

    MailServer

    (Leave this field empty.)

    3600

    0

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

    <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?

    Active24-BP-Configure-2-2

  6. Choose Create.

    Active24-BP-Configure-2-3

  7. If there are any other MX records, delete them by choosing the Delete (trash can) control.

    Active24-BP-Configure-2-4

  8. If you deleted any MX records in the preceding step, choose Delete record on the confirmation page.

    Active24-BP-Configure-2-5

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Add the four CNAME records that are required for Office 365

  1. To get started, go to your domains page at Active24 by using this link. You'll be prompted to Log In first.

    Active24-BP-Configure-1-1

  2. On the Customer center page, in the Domain overview section, choose the name of the domain that you want to edit.

    Active24-BP-Configure-1-2

  3. Under Domain details: domain_name, choose DNS administration.

    Active24-BP-Configure-1-3

  4. On the Customer center page, in the Add record section, choose CNAME.

    Active24-BP-Configure-3-1

  5. Add the first of the four CNAME records.

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

    Name

    TTL

    Alias to

    autodiscover

    3600

    autodiscover.outlook.com.

    This value MUST end with a period (.)

    sip

    3600

    sipdir.online.lync.com.

    This value MUST end with a period (.)

    lyncdiscover

    3600

    webdir.online.lync.com.

    This value MUST end with a period (.)

    msoid

    3600

    clientconfig.microsoftonline-p.net.

    This value MUST end with a period (.)

    Active24-BP-Configure-3-2

  6. Choose Create.

    Active24-BP-Configure-3-3

  7. To add each of the other three CNAME records, choose CNAME again, create a record using the values from the next row in the table, and then again choose Create to complete that record.

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

  8. Important: If you have Mobile Device Management (MDM) for Office 365, 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.)

    Name

    TTL

    Alias to

    enterpriseregistration

    3600

    enterpriseregistration.windows.net.

    This value MUST end with a period (.)

    enterpriseenrollment

    3600

    enterpriseenrollment-s.manage.microsoft.com.

    This value MUST end with a period (.)

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Add a TXT record for SPF to help prevent email spam

Important: You cannot have more than one TXT record for SPF for a domain. If your domain has more than one 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 one 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.

  1. To get started, go to your domains page at Active24 by using this link. You'll be prompted to Log In first.

    Active24-BP-Configure-1-1

  2. On the Customer center page, in the Domain overview section, choose the name of the domain that you want to edit.

    Active24-BP-Configure-1-2

  3. Under Domain details: domain_name, choose DNS administration.

    Active24-BP-Configure-1-3

  4. On the Customer center page, in the Add record section, choose TXT.

    Active24-BP-Configure-4-1

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

    Name

    TTL

    Text

    (Leave this field empty.)

    3600

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

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

    Active24-BP-Configure-4-2

  6. Choose Create.

    Active24-BP-Configure-4-3

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Add the two SRV records that are required for Office 365

  1. To get started, go to your domains page at Active24 by using this link. You'll be prompted to Log In first.

    Active24-BP-Configure-1-1

  2. On the Customer center page, in the Domain overview section, choose the name of the domain that you want to edit.

    Active24-BP-Configure-1-2

  3. Under Domain details: domain_name, choose DNS administration.

    Active24-BP-Configure-1-3

  4. On the Customer center page, in the Add record section, choose SRV.

    Active24-BP-Configure-5-1

  5. Add the first of the two SRV records.

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

    Name

    TTL

    Priority

    Weight

    Port

    Target

    _sip._tls

    3600

    100

    1

    443

    sipdir.online.lync.com.

    This value MUST end with a period (.)

    _sipfederationtls._tcp

    3600

    100

    1

    5061

    sipfed.online.lync.com.

    This value MUST end with a period (.)

    Active24-BP-Configure-5-2

  6. Choose Create.

    Active24-BP-Configure-5-3

  7. To add the other SRV record, choose SRV again, create a record using the values from the second row in the table, and then again choose Create to complete the record.

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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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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