I've had access for a few days, before the beta was opened up for everyone, and have been experimenting with the forwarding. This is following on from
this post.
However, setting up Cloudflare has resulted in a few more head scratches than normal!
I set up the DNS records as I thought they should be, but Cloudflare didn't like some of them and I was getting failures on receipt (always checking via a Gmail account). I'm now at a stage where Cloudflare is saying 'A few more steps are required to complete your setup' and wants a DMARC record policy included - I entered a DMARC record (none policy), but that then resulted in Gmail reporting DMARC as FAIL. That's confused me as I then was receiving DMARC reports on e-mails forwarded from Cloudflare! So, I've removed the DMARC record but Cloudflare are asking for it again.
Are Cloudflare treating their forwarding different from, for example, Porkbun's forwarding?