Create DNS records at Strato for Office 365

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

If Strato.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.

After you add these records at Strato.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 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 Strato.com by using this link. You'll be prompted to log in.

    strato_login

  2. Select Domains.

    Strato_domains

  3. Select Domain management.

    strato_domainManagement

  4. On the Domain management page, next to the domain you want to manage, select manage.

    strato_manage

  5. Under Settings (domain), expand DNS Settings.

    strato_DNSsettings

  6. Next to TXT records, including SPF and DKIM settings, select manage

    strato_TXT_manage

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

    Prefix Type Value
    (leave blank)
    TXT
    MS=msXXXXXXX
    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?
  8. Select Accept settings.

    Strato_TXT_values_accept

  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. Choose Setup > Domains.

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

    Domain name selected in Office 365 Admin Center

  3. On the Setup page, choose Start setup.

    Start setup

  4. On the Verify domain page, choose Verify.

    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 Strato.com by using this link. You'll be prompted to log in.

    strato_login

  2. Select Domains.

    Strato_domains

  3. Select Domain management.

    strato_domainManagement

  4. On the Domain management page, next to the domain you want to manage, select manage.

    strato_manage

  5. Under Settings (domain), expand DNS Settings.

    strato_DNSsettings

  6. Next to MX record, choose manage

    Strato_MX_manage

  7. Next to Primary mail server, choose Personal mail server. In the Address 1 box for the primary mail server, type or copy and paste the value from the following table.

    Note

    You must include a period at the end of the Address 1 value.

    Type Priority Address 1 (Points to address or value)
    MX
    high For more information about priority, see What is MX priority?
    <domain-key>.mail.protection.outlook.com.
    Note: Get your <domain-key> from your Office 365 portal account. How do I find this?

    Strato_MX_manage

  8. Select Accept settings to save the record.

Add the CNAME records that are required for Office 365

You'll create the required CNAME records by creating the six subdomains first, and then updating each subdomain with its correct CNAME value.

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

    strato_login

  2. Select Domains.

    Strato_domains

  3. Select Domain management.

    strato_domainManagement

  4. On the Domain management page, next to the domain you want to manage, select manage.

    strato_manage

  5. In this step, you'll create the six subdomains listed in the Subdomain (Host name) table below. Later in, step 7, you'll update each subdomain with its correct CNAME value.

  6. Under Settings (domain), expand Create sub-domain.

    Strato_subdomain_Expand

  7. In the Name of the sub-domain box, type the first subdomain name from the Subdomain (Host name) table below. Then select Create sub-domain.

    Strato_subdomain_Create

  8. Repeat this step for each subdomain in the following table.

    Subdomain (Host name)
    autodiscover
    sip
    lyncdiscover
    msoid
    enterpriseregistration
    enterpriseenrollment
  9. Select To the overview.

    Strato_ToOverview

  10. Now you'll update each subdomain with its CNAME value.

  11. Select the + icon next to your domain to expand the subdomain list.

    Strato_expand_domain

  12. Next to a subdomain, select manage.

    Strato_subdomain_manage

  13. Expand DNS management.

    Strato_subdomain_Expand_DNS

  14. Next to CNAME record, select manage.

    Strato_subdomain_CNAME_manage

  15. Select Change CNAME entry, and then enter the corresponding CNAME value from the table below. You must include a period at the end of the value.

    Subdomain (Host name) Type Value (Points to address or value)
    autodiscover
    CNAME
    autodiscover.outlook.com.
    sip
    CNAME
    sipdir.online.lync.com.
    lyncdiscover
    CNAME
    webdir.online.lync.com.
    msoid
    CNAME
    clientconfig.microsoftonline-p.net.
    enterpriseregistration
    CNAME
    enterpriseregistration.windows.net.
    enterpriseenrollment
    CNAME
    enterpriseenrollment.manage.microsoft.com.

    Strato_subdomain_CNAME_values

  16. Select the I am aware… checkbox, and then select Accept settings.

    Strato_subdomain_CNAME_values

  17. Select To the overview

    Strato_CNAME_values_ToOverview

  18. Select To the overview again.

    Strato_CNAME_values_ToOverviewAgain

  19. Select the + icon next to your domain to expand the subdomain list, and then repeat this entire step for each subdomain in the list.

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.

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

    strato_login

  2. Select Domains.

    Strato_domains

  3. Select Domain management.

    strato_domainManagement

  4. On the Domain management page, next to the domain you want to manage, select manage.

    strato_manage

  5. Under Settings (domain), expand DNS Settings.

    strato_DNSsettings

  6. Next to TXT records, including SPF and DKIM settings, choose manage.

    strato_TXT_manage

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

    Note

    If records already exist, select the + button to add a new TXT record.

    Prefix Type Value
    (leave blank)
    TXT
    v=spf1 include:spf.protection.outlook.com -all
    Note: We recommend copying and pasting this entry, so that all of the spacing stays correct.

    Strato_TXT SPF_values

  8. Select Accept settings to save the record.

    Strato_TXT SPF_values_Accept

Add the two SRV records that are required for Office 365

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

    strato_login

  2. Select Domains.

    Strato_domains

  3. Select Domain management.

    strato_domainManagement

  4. On the Domain management page, next to the domain you want to manage, select manage.

    strato_manage

  5. Under Settings (domain), expand DNS Settings.

    strato_DNSsettings

  6. Next to SRV record, choose manage.

    Strato_SRV_manage

  7. Next to SRV record, select Enabled, and then in the boxes for the new record, type or copy and paste the values from the following table.

    Service Protocol Record type Priority Weight Port Target
    sip
    tls
    SRV (Service)
    100
    1
    443
    sipdir.online.lync.com.
    sipfederationtls
    tcp
    SRV (Service)
    100
    1
    5061
    sipfed.online.lync.com.

    Strato_SRV_values

  8. Select the + icon to add a new line for the second SRV record. Type or copy and paste the values from the table above for the second record.

  9. Select Accept settings to save the records.

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.