I have been banging my head into an issue where the CNAME fails to get set due to an undetermined reason.
When I try to set the CNAME of my portal to nl-us-apim.srv.xxxxxxxx.nl
this fails
When I try to set the CNAME of my portal to apim-dev.xxxxxxx.nl
this succeeds
We now added the above reference in the local DNS server, but I’m really wondering what causes this issue; is some kind of script checking for at least 3 dots to block the use of an IP address here?