Create DNS records at Fasthosts.co.uk for Office 365

If Fasthosts.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.)

After you add these records at Fasthosts.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 Fasthosts.co.uk by using this link. You'll be prompted to log in first.

    FasthostsUK-BP-Configure-1-1

  2. On the top navigation bar, choose Domain, and then choose Manage Domains.

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  3. On the Configure Domain Names page, find the name of the domain that you are updating, and then choose the DNS icon for that domain name.

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  4. On the Advanced DNS page for your domain, in the TXT Records section, choose Add TXT Record.

    (You may have to scroll down.)

    FasthostsUK-BP-Verify-1-1

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

    Host Name

    Value

    @

    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?

    FasthostsUK-BP-Verify-1-2

  6. Choose Save.

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  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.

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  3. On the Add this TXT record to show you own domain_name page, choose Okay, I've added the record.

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  4. Choose Next.

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

    FasthostsUK-BP-Configure-1-1

  2. On the top navigation bar, choose Domain, and then choose Manage Domains.

    FasthostsUK-BP-Configure-1-2

  3. On the Configure Domain Names page, find the name of the domain that you are updating, and then choose the DNS icon for that domain name.

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  4. On the Advanced DNS page for your domain, in the MX Records section, choose Add MX Record.

    (You may have to scroll down.)

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

    Host Name

    Points To

    Priority

    @

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

    Note: Get your <domain-key> from your Office 365 portal account.
    How do I find this?

    0

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

    FasthostsUK-BP-Configure-2-2

  6. Choose Save.

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  7. If there are any other MX records in the MX Records section, delete one of them by choosing Remove for that one.

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  8. Select the confirmation check box.

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  9. Choose Confirm.

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  10. Use the same process to delete all other MX records except for the one that you created in this procedure.

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

    FasthostsUK-BP-Configure-1-1

  2. On the top navigation bar, choose Domain, and then choose Manage Domains.

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  3. On the Configure Domain Names page, find the name of the domain that you are updating, and then choose the DNS icon for that domain name.

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  4. On the Advanced DNS page for your domain, in the CNAME Records section, choose Add CNAME Record.

    (You may have to scroll down.)

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  5. Add the first of the four CNAME records.

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

    Host Name

    Points To

    autodiscover

    autodiscover.outlook.com

    sip

    sipdir.online.lync.com

    lyncdiscover

    webdir.online.lync.com

    msoid

    clientconfig.microsoftonline-p.net

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  6. Choose Save.

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  7. Add each of the other three CNAME records.

    On the Advanced DNS page, choose Add CNAME Record, create a record using the values from the next row in the table, and then again choose Save 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.)

    Host Name

    Points To

    enterpriseregistration

    enterpriseregistration.windows.net

    enterpriseenrollment

    enterpriseenrollment.manage.microsoft.com

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

    FasthostsUK-BP-Configure-1-1

  2. On the top navigation bar, choose Domain, and then choose Manage Domains.

    FasthostsUK-BP-Configure-1-2

  3. On the Configure Domain Names page, find the name of the domain that you are updating, and then choose the DNS icon for that domain name.

    FasthostsUK-BP-Configure-1-3

  4. On the Advanced DNS page for your domain, in the TXT Records section, choose Add TXT Record.

    (You may have to scroll down.)

    FasthostsUK-BP-Configure-4-1

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

    Host Name

    Value

    @

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

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

    FasthostsUK-BP-Configure-4-2

  6. Choose Save.

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

    FasthostsUK-BP-Configure-1-1

  2. On the top navigation bar, choose Domain, and then choose Manage Domains.

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  3. On the Configure Domain Names page, find the name of the domain that you are updating, and then choose the DNS icon for that domain name.

    FasthostsUK-BP-Configure-1-3

  4. On the Advanced DNS page for your domain, in the SRV Records section, choose Add SRV Record.

    (You may have to scroll down.)

    FasthostsUK-BP-Configure-5-1

  5. 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.

    Host Name

    Priority

    Weight

    Port

    Target

    _sip._tls

    100

    1

    443

    sipdir.online.lync.com

    _sipfederationtls._tcp

    100

    1

    5061

    sipfed.online.lync.com

    FasthostsUK-BP-Configure-5-2

  6. Choose Save.

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  7. Add the other SRV record.

    On the Advanced DNS page, in the SRV Records section, choose Add SRV Record, create a record using the values from the other row in the table, and then again choose Save to complete the second 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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