Set up DKIM for Postmark
The exact steps in the Postmark admin console, followed by a checker to confirm the record resolves once you publish it.
Steps
- In Postmark, open your domain under Sender Signatures (or Domains) and find the DKIM section.
- Publish the DKIM TXT record Postmark shows at the selector host it specifies (Postmark uses a dated selector such as 20240101pm._domainkey).
- Press Verify in Postmark once the record resolves.
- Postmark rotates DKIM keys periodically and will prompt you to publish a second record before switching. Publish it when asked so signing never lapses.
Confirm it workedDKIM checker
DNS changes take time to propagate. Check the record once you have published it.