A manual zone has no Cloudflare records to read, so the Resend and SES receiving checks reported 'MX record points to Resend' as failed even when the MX was right. Manual zones are now checked against public DNS, and a lookup that cannot run says so instead of failing the step.
A Resend domain with nothing else to name a DKIM selector is checked at resend._domainkey, which is the record Resend asks for.
Co-authored-by: Can Kirca <9063990+cankirca@users.noreply.github.com>