Generate Dkim Key Office 365

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Generate Dkim Office 365

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Key

If Hostgator 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.

Important

You must perform the first procedurebelow, Point your domain to your hosting account, before you add DNS records by using any of the other procedures in this article.

After you make all of these changes at Hostgator, 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 Find and fix issues after adding your domain or DNS records in Office 365.

Office

Point your domain to your hosting account

Important

You must perform this procedure before you perform any of the other procedures in this article.

Follow these steps to associate your domain and hosting accounts.

  1. To get started, go to your domain management page at Hostgator by using this link. You'll be prompted to log in.

  2. Select Domains on the left.

  3. On the Manage Domains page, select the domain you want to update.

  4. On the pop-out menu on the left, select Name Servers.

  5. On the Name Servers page for your domain, in the Automatically point this domain to my hosting account drop-down list, choose the hosting account that is associated with your domain.

  6. Select Save Name Servers.

Add a TXT record for verification

Important

Before you perform this procedure, you must first perform the procedure in the first section of this article, Point your domain to your hosting account.

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 cPanel page at Hostgator. You'll be prompted to log in first.

    (Each hosted account at Hostgator is assigned a unique cPanel address. Your cPanel address should look like this: https://YourSiteAddress:secure-port-number. The sign-up email you received from Hostgator will specify that address, and a cPanel link is also available on the Hosting page.)

    Important

    To have a cPanel associated with your domain, you need a hosting account with Hostgator. To get started with Office 365, you can either purchase a hosting account from Hostgator or redelegate your nameservers to point to Office 365.

  2. On the Control Panel page, in the Domains area, select Advanced Zone Editor.

  3. On the Advanced Zone Editor page, in the Add a Record area, 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.)

    Name
    TTL
    Type
    TXT Data
    Use your domain_name. (for example, fourthcoffee.com.)
    This value MUST end with a period (.)
    1
    TXT
    MS=ms XXXXXXXX
    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?
  4. Select Add Record.

  5. 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. In the admin center, go to the Settings > Domains page.

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

  3. On the Setup page, select Start setup.

  4. On the Verify domain page, select 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 Find and fix issues after adding your domain or DNS records in Office 365.

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

Important

Before you perform this procedure, you must first perform the procedure in the first section of this article, Point your domain to your hosting account.

  1. To get started, go to your cPanel page at Hostgator. You'll be prompted to log in first.

    (Each hosted account at Hostgator is assigned a unique cPanel address. Your cPanel address should look like this: https://YourSiteAddress:secure-port-number. The sign-up email you received from Hostgator will specify that address, and a cPanel link is also available on the Hosting page.)

    Important

    To have a cPanel associated with your domain, you need a hosting account with Hostgator. To get started with Office 365, you can either purchase a hosting account from Hostgator or redelegate your nameservers to point to Office 365.

  2. On the Control Panel page, in the Email area, select MX Entry.

  3. In the Email Routing area, select Remote Mail Exchanger.

  4. Select Change.

  5. In the Add a New Record area, in the boxes for the new record, type or copy and paste the values from the following table.

    PriorityDestination
    0
    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 account. How do I find this?
  6. Select Add New Record.

  7. If there are any other MX records in the MX Records section, remove each of them.

Add the six CNAME records that are required for Office 365

Important

Before you perform this procedure, you must first perform the procedure in the first section of this article, Point your domain to your hosting account.

  1. To get started, go to your cPanel page at Hostgator. You'll be prompted to log in first.

    (Each hosted account at Hostgator is assigned a unique cPanel address. Your cPanel address should look like this: https://YourSiteAddress:secure-port-number. The sign-up email you received from Hostgator will specify that address, and a cPanel link is also available on the Hosting page.)

    Important

    To have a cPanel associated with your domain, you need a hosting account with Hostgator. To get started with Office 365, you can either purchase a hosting account from Hostgator or redelegate your nameservers to point to Office 365.

  2. On the Control Panel page, in the Domains area, select Advanced Zone Editor.

  3. Add the first of the six CNAME records.

    On the Advanced Zone Editor page, in the Add a Record area, in the boxes for the new record, type or copy and paste the values from the first row in the following table.

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

    NameTTLTypeCNAME
    autodiscover. domain_name. (for example, autodiscover.fourthcoffee.com.)
    This value MUST end with a period (.)
    3600
    CNAME
    autodiscover.outlook.com
    sip. domain_name. (for example, sip.fourthcoffee.com.)
    This value MUST end with a period (.)
    3600
    CNAME
    sipdir.online.lync.com
    lyncdiscover. domain_name. (for example, lyncdiscover.fourthcoffee.com.)
    This value MUST end with a period (.)
    3600
    CNAME
    webdir.online.lync.com
    enterpriseregistration. domain_name. (for example, enterpriseregistration.fourthcoffee.com.)
    This value MUST end with a period (.)
    3600
    CNAME
    enterpriseregistration.windows.net
    enterpriseenrollment. domain_name. (for example, enterpriseregistration.fourthcoffee.com.)
    This value MUST end with a period (.)
    3600
    CNAME
    enterpriseenrollment-s.manage.microsoft.com
  4. Select Add Record.

  5. Add each of the other five CNAME records.

    In the Add a Record section, create a record by using the values from the next row in the table, and then again select Add Record to complete that record.

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

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 External Domain Name System records for Office 365. To validate your SPF record, you can use one of these SPF validation tools.

Important

Before you perform this procedure, you must first perform the procedure in the first section of this article, Point your domain to your hosting account.

  1. To get started, go to your cPanel page at Hostgator. You'll be prompted to log in first.

    (Each hosted account at Hostgator is assigned a unique cPanel address. Your cPanel address should look like this: https://YourSiteAddress:secure-port-number. The sign-up email you received from Hostgator will specify that address, and a cPanel link is also available on the Hosting page.)

    Important

    To have a cPanel associated with your domain, you need a hosting account with Hostgator. To get started with Office 365, you can either purchase a hosting account from Hostgator or redelegate your nameservers to point to Office 365.

  2. On the Control Panel page, in the Domains area, select Advanced Zone Editor.

  3. On the Advanced DNS Zone Editor page, in the Add a Record area, 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.)

    NameTTLTypeTXT Data
    Use your domain_name. (for example, fourthcoffee.com.)
    This value MUST end with a period (.)
    3600
    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.
  4. Select Add Record.

Add the two SRV records that are required for Office 365

Important

Before you perform this procedure, you must first perform the procedure in the first section of this article, Point your domain to your hosting account.

  1. To get started, go to your cPanel page at Hostgator. You'll be prompted to log in first.

    (Each hosted account at Hostgator is assigned a unique cPanel address. Your cPanel address should look like this: https://YourSiteAddress:secure-port-number. The sign-up email you received from Hostgator will specify that address, and a cPanel link is also available on the Hosting page.)

    Important

    To have a cPanel associated with your domain, you need a hosting account with Hostgator. To get started with Office 365, you can either purchase a hosting account from Hostgator or redelegate your nameservers to point to Office 365.

  2. On the Control Panel page, in the Domains area, select Advanced Zone Editor.

  3. Add the first of the two SRV records.

    On the Advanced DNS Zone Editor page, in the Add a Record area, in the boxes for the new record, type or copy and paste the values from the first row in the following table.

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

    NameTTLTypePriorityWeightPortTarget
    _sip._tls. domain_name. (for example, _sip._tls.fourthcoffee.com.)
    This value MUST end with a period (.)
    3600
    SRV
    100
    1
    443
    sipdir.online.lync.com
    _sipfederationtls._tcp. domain_name. (for example, _sipfederationtls._tcp.fourthcoffee.com.)
    This value MUST end with a period (.)
    3600
    SRV
    100
    1
    5061
    sipfed.online.lync.com
  4. Select Add Record.

  5. Add the other SRV record.

    In the Add a Record section, create a record by using the values from the next row in the table, and then again select Add Record 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 Find and fix issues after adding your domain or DNS records in Office 365.

What's the latest advice on DMARC, DKIM and SPF for Office 365 tenants?

I have configured SPF records with the Office 365 include for all domains that I manage as a minimum.

I have configured DMARC records in 'Monitor' for a few recent tenants recently, but I am yet to roll this out for all domains/tenants.

I have not configured custom DKIM for any tenants - I know that Office 365 has Default DKIM Signing configured (which is based on the default tenant domain name that you are given with all new tenants).

Microsoft recommend configuring DKIM if;

Key
  • You have more than one domain in Office 365
  • You're going to set up DMARC too (recommended) - I can only assume DMARC doesn't work correctly with default DKIM don't work, hence the need to configure custom DKIM records?
  • You want control over your private key
  • You want to customize your CNAME records
  • You want to set up DKIM keys for email originating out of a third-party domain, for example, if you use a third-party bulk mailer.

Office 365 Dkim Key

I'm trying to work out if I should set up all three of the above for all the tenants I manage? None have more than 35 users so I would classify them as SMBs.

I think if you're going to configure DKIM, you should configure DMARC to give instructions to recipient mail servers on what action to take if SPF and DKIM fail.

I have looked at DMARC reports in the past (never received a forensic report - I don't think many mail providers generate these yet?) and cannot make much sense out of the detail included.

Dkim Key Office 365

Any advice appreciated.

Dkim Example Office 365

Thanks

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