Create DNS records at Register.com for Office 365

Contributors:

Check the Domains FAQ if you don't find what you're looking for.

If Register.com 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. Follow the steps below or watch the video. (Need more help? Get support.)

• 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

• Add two SRV records

After you add these records at Register.com, 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 at Register.com to verify that you own the domain

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.

Follow the steps below or watch the video (start at 0:44).

1. To get started, go to your domains page at Register.com by using this link. You'll be prompted to sign in.

   

2. Choose Domains.

   

3. Choose Manage.

   

4. Find the row that contains the name of the domain that you want to modify; and then, in that row, choose Manage.

   

5. Scroll down to the Advanced Technical Settings section, and then choose Edit TXT Records (SPF).

   

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

   Host Name	TXT Record
   @	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?

   

7. Choose Continue.

   

8. On the next page, choose Continue again to confirm your changes.

   

9. 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 Domains page, choose the domain that you are verifying.

   

3. On the Setup page, choose Start setup.

   

4. On the Verify domain page, 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.

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

Follow the steps below or watch the video (start at 3:32).

1. To get started, go to your domains page at Register.com by using this link. You'll be prompted to sign in.

   

2. Choose Domains.

   

3. Choose Manage.

   

4. Find the row that contains the name of the domain that you want to modify; and then, in that row, choose Manage.

   

5. Scroll to the Advanced Technical Settings section, and then choose Edit Mail Exchanger Records.

   

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

   (Select the Priority value from the drop-down list.)

   Host Name	Priority	Mail Server
   @	High 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?

   

7. If there were any other MX records already listed, select each of those records to be deleted.

   

8. Choose Continue.

   

9. On the next page, choose Continue again to confirm and save your changes.

   

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Add the CNAME records that are required for Office 365

Follow the steps below or watch the video (start at 4:23).

1. To get started, go to your domains page at Register.com by using this link. You'll be prompted to sign in.

   

2. Choose Domains.

   

3. Choose Manage.

   

4. Find the row that contains the name of the domain that you want to modify; and then, in that row, choose Manage.

   

5. Scroll to the Advanced Technical Settings section, and then choose Edit Domain Aliases Records.

   

6. Choose Add more domain aliases.

   

7. Add the required CNAME records.

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

   First field (unlabeled)	Points to
   autodiscover	autodiscover.outlook.com. This value MUST end with a period (.)
   sip	sipdir.online.lync.com. This value MUST end with a period (.)
   lyncdiscover	webdir.online.lync.com. This value MUST end with a period (.)
   msoid	clientconfig.microsoftonline-p.net. This value MUST end with a period (.)
   enterpriseregistration	enterpriseregistration.windows.net. This value MUST end with a period (.)
   enterpriseenrollment	enterpriseenrollment.manage.microsoft.com. This value MUST end with a period (.)

   

8. When you have added all of the CNAME records that you need, choose Continue.

   

9. On the next page, choose Continue again to confirm and save your changes.

   

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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.

Follow the steps below or watch the video (start at 5:12).

1. To get started, go to your domains page at Register.com by using this link. You'll be prompted to sign in.

   

2. Choose Domains.

   

3. Choose Manage.

   

4. Find the row that contains the name of the domain that you want to modify; and then, in that row, choose Manage.

   

5. Scroll to the Advanced Technical Settings section, and then choose Edit TXT Records (SPF).

   

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

   Host Name	TXT Record
   @	v=spf1 include:spf.protection.outlook.com -all Note: We recommend copying and pasting this entry, so that all of the spacing stays correct.

   

7. Choose Continue.

   

8. On the next page, choose Continue again to confirm and save your changes.

   

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Add the two SRV records that are required for Office 365

Follow the steps below or watch the video (start at 5:55).

1. To get started, go to your domains page at Register.com by using this link. You'll be prompted to sign in.

   

2. Choose Domains.

   

3. Choose Manage.

   

4. Find the row that contains the name of the domain that you want to modify; and then, in that row, choose Manage.

   

5. Scroll to the Advanced Technical Settings section, and then choose Edit SRV Records.

   

6. Add the first of the two SRV records:

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

   (Select the Priority value from the drop-down list.)

   Service	Proto	Name	Priority	Weight	Port	Target
   _sip	_tls	@	High	1	443	sipdir.online.lync.com. This value MUST end with a period (.)
   _sipfederationtls	_tcp	@	High	1	5061	sipfed.online.lync.com. This value MUST end with a period (.)

   

7. Choose Add more SRV records.

   

8. Add the second SRV record:

   Type or copy and paste the values from the second row of the table above into the boxes for the second record.

9. When you have added both of the SRV records, choose Continue.

   

10. On the next page, choose Continue again to confirm and save your changes.

    

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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