How do I set up DKIM for Postmark?

Adding DKIM authentication to emails you send through Postmark requires that you add a DKIM record to your DNS. Once DKIM is set up and verified, emails sent through Postmark using the domain will be signed with DKIM.

  1. Navigate to your Sender Signatures tab. 
  2. Under the domain you are adding DKIM authentication for, click Authenticate this domain.
  3. A DKIM record we generated to be added to your DNS. Each DKIM record is unique to the domain and Postmark account. 

  1. Head over to your host or DNS provider and access the area where you can add new DNS records. For some help on where you can do this for common providers, see our resources for popular hosts and DNS providers here.
  2. In your DNS manager, add a new TXT record with the host and value shown in your Authentication page for the domain you adding DKIM for.

Once the record is added to your DNS, DKIM will show as verified in your Postmark account within 48 hours. After it is verified we will begin signing emails sent through Postmark using this domain with DKIM.

Last updated July 28th, 2017

Still need some help?

Our customer success team is here to help!