Dear customer,
On February 1, 2027, we’re retiring support for DKIM TXT records.
MailerSend now issues 2048-bit dual CNAME records for DKIM. These keys allow us to rotate keys without downtime.
You’ll need to migrate to the new dual keys before they are no longer supported.
Log in to your account and open Domains.
Update your DNS records and re-check the configuration.