Dear Support thanks for answering,
It didn’t work.
So I was wondering, this tracking insnt from elasticmail? Then I checked out the DNS table from cloudflare, which had no CNAME for tracking.[mydomain]. And filling it, the arrived newsletters found the tracking links to mydomain or other directions.
For those who use Cloudfalre (or other CDN) with Elasticmail, you need to create a CNAME pointing to api.elasticemail.com at the Cloudflare’s DNS table also.
So, thank you very much Support for your help and making me think about the right question.
Best regards.
Pedro