Issue with CNAME setup for Mailchimp

Mailchimp requested to create a CNAME record for k1._domainkey.mywebsite.com with this value dkim.mcsv.net

I created it but mailchimp still fail to authenticate even after 48h

What should I do?

Your DNS configuration looks correct to me.

Can you confirm you don’t have CNAME flattening for all subdomains enabled?

The only options available are:
Flatten all CNAMEs (option currently selected)
Flatten CNAME at root

Allright. You need to select Flatten CNAME at root for Mailchimp’s system to detect that your records are set up.

It worked.
many thanks.

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