I reported in forum, but cannot find it in feedbck - maybe hidden

When I create a new uploaded image file, it does not work in an email - the file name generated is invalid as the DNS name does not exist

My Dynamics 365 Marketing Preview is UK (<xyz>crm11.dynamics.com) wondering if this is a CDN issue

https://mktdplp102usda.azureedge.net/5b0fc86f-4b26-e811-a956-00224807251a/cgpevEmrp3FJK4howC14Qu9_obTabvHF-8fgRPpoMmw!