![]() ![]() ![]() But when we enable them without publishing the DNS records for DKIM then we will get the below error. We can enable for the routable domains registered with office 365. Later we need to create CNAMES only for the new domains we are adding in office 365.įirst we need to enable DKIM from the Exchange admin center from the office 365 portal – navigate to protection – click on DKIM tab We just need to create CNAME in our DNS console only for Because in this case the private key is owned by Microsoft and the public key is maintained in their office365 DNS records. With this office 365 CNAME option we can rotate the keys whenever required. But office 365 requests the customers to publish the CNAME and point them to a public key in DNS which will delegate the corresponding name space to office 365. ![]() Later we publish the public key in the DNS record. In on premise we keep the private keys in our outgoing Anti spam gateway or DKIM agent which will be responsible for signing every outbound emails with DKIM stamp.The main difference between enabling DKIM in on premise environment and office 365 is: In this article we will go through the steps to enable DKIM in pure office 365 cloud environment.įor understanding DKIM concepts and Enabling DKIM in on premise environment you can follow my previous blog ![]()
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