A Step-by-Step Guide to Creating DKIM Keys in Office 365 Admin


As a business owner, you want to ensure that your emails are secure and authenticated. DKIM (DomainKeys Identified Mail) is a protocol that helps you achieve this by adding a digital signature to your emails. In this article, we will guide you through the process of creating DKIM keys in Office 365 Admin.

  1. Login to Office 365 admin
  2. Click more options on side nav if you don’t see Exchange
  3. Click exchange > in search bar type: DKIM
  4. Select first option in search results
  5. Click the domain
  6. Click create DKIM keys
  7. Copy the keys created and add to your DNS
  8. Once it propagates in DNS toggle to enabled
  9. Test sending to a yahoo email

Login to Office 365 Admin

The first step is to log in to your Office 365 Admin account. Once you are logged in, navigate to the side nav and click on "more options" if you don't see "Exchange".

Click Exchange and Search for DKIM

Next, click on "Exchange" and in the search bar, type "DKIM". Select the first option in the search results.

Click on the Domain and Create DKIM Keys

Once you have selected the first option, click on the domain that you want to create DKIM keys for. Then, click on "Create DKIM keys" and copy the keys that are generated.

Propagate DKIM Keys in DNS and Enable

After you have copied the keys, wait for them to propagate in DNS. This process typically takes around 5 minutes. Once the keys have propagated, toggle to enable DKIM. Finally, test sending an email to a Yahoo email address to ensure that it is working correctly.


By following these simple steps, you can easily create DKIM keys in Office 365 Admin and ensure that your emails are secure and authenticated. Don't overlook the importance of email security in your business, and take the necessary steps to protect your emails from being compromised.

Screenshot showing a section of an administrative control panel interface with a focus on the 'exchange' option, which is highlighted and selected.

Screenshot of a dkim (domainkeys identified mail) settings page with an arrow pointing to the "create dkim keys" button.


toggle off DKIM

A screenshot showing a toggle switch set to "enabled" for the option to sign messages with dkim signatures for a domain, with the status indicating that dkim signatures are being signed for this domain on