Create DNS records at 123-reg.co.uk for Office 365

If 123-reg.co.uk 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.)

• 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 123-reg.co.uk, 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 at 123-reg.co.uk by using this link. You'll be prompted to log in first.

   

2. On the Domain name overview page, select the name of the domain that you want to edit.

   

3. Choose DNS from the Select action drop-down list.

   

4. On the Manage your DNS page, choose the Advanced DNS tab.

   

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

   (Choose the Type value from the drop-down list.)

   Hostname	Type	Destination TXT/SPF
   @	TXT/SPF	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?

   

6. Choose Add.

   

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 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

1. To get started, go to your domains page at 123-reg.co.uk by using this link. You'll be prompted to log in first.

   

2. On the Domain name overview page, select the name of the domain that you want to edit.

   

3. Choose DNS from the Select action drop-down list.

   

4. On the Manage your DNS page, choose the Advanced DNS tab.

   

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

   (Choose the Type value from the drop-down list.)

   Hostname	Type	Priority	Destination MX
   @	MX	1 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?

   

6. Choose Add.

   

7. If there are any other MX records, remove each one by choosing the Delete (trash can) icon for that record.

   

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Add the six CNAME records that are required for Office 365

1. To get started, go to your domains page at 123-reg.co.uk by using this link. You'll be prompted to log in first.

   

2. On the Domain name overview page, select the name of the domain that you want to edit.

   

3. Choose DNS from the Select action drop-down list.

   

4. On the Manage your DNS page, choose the Advanced DNS tab.

   

5. Add the first of the six CNAME records.

   In the Advanced DNS section, in the boxes for the new record, type or copy and paste the values from the following table.

   (Choose the Type value from the drop-down list.)

   Hostname	Type	Destination CNAME
   autodiscover	CNAME	autodiscover.outlook.com. This value MUST end with a period (.)
   sip	CNAME	sipdir.online.lync.com. This value MUST end with a period (.)
   lyncdiscover	CNAME	webdir.online.lync.com. This value MUST end with a period (.)
   msoid	CNAME	clientconfig.microsoftonline-p.net. This value MUST end with a period (.)
   enterpriseregistration	CNAME	enterpriseregistration.windows.net. This value MUST end with a period (.)
   enterpriseenrollment	CNAME	enterpriseenrollment.manage.microsoft.com. This value MUST end with a period (.)

   

6. Choose Add.

   

7. Add the other five CNAME records.

   In the Advanced DNS section, create a record using the values from the next row in the table, and then again choose Add to complete that record.

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

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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 123-reg.co.uk by using this link. You'll be prompted to log in first.

   

2. On the Domain name overview page, select the name of the domain that you want to edit.

   

3. Choose DNS from the Select action drop-down list.

   

4. On the Manage your DNS page, choose the Advanced DNS tab.

   

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

   (Choose the Type value from the drop-down list.)

   Hostname	Type	Destination TXT/SPF
   @	TXT/SPF	v=spf1 include:spf.protection.outlook.com -all Note: We recommend copying and pasting this entry, so that all of the spacing stays correct.

   

6. Choose Add.

   

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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 123-reg.co.uk by using this link. You'll be prompted to log in first.

   

2. On the Domain name overview page, select the name of the domain that you want to edit.

   

3. Choose DNS from the Select action drop-down list.

   

4. On the Manage your DNS page, choose the Advanced DNS tab.

   

5. Add the first of the two SRV records:

   In the Advanced DNS section, in the boxes for the new record, type or copy and paste the values from the following table.

   (Choose the Type value from the drop-down list.)

   Hostname	Type	Priority	TTL	Destination SRV
   _sip._tls	SRV	100	3600	1 443 sipdir.online.lync.com. This value MUST end with a period (.) Note: We recommend copying and pasting this entry, so that all of the spacing stays correct.
   _sipfederationtls._tcp	SRV	100	3600	1 5061 sipfed.online.lync.com. This value MUST end with a period (.) Note: We recommend copying and pasting this entry, so that all of the spacing stays correct.

   

6. Choose Add.

   

7. To add the other SRV record:

   In the Advanced DNS section, create a record by using the values from the second row in the table, and then again choose Add to complete that 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?

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