I am trying to setup the Azure AD connect in the new portal. For days, when I tried to add a domain, it gave me the "Forbidden" error. I thought it was some bug in the new portal because in the old portal it worked fine. Now after a few days, it does indeed suddenly work.
But now I cannot verify my domain by txt or mx record. This is the error:
Unable to verify domain name. Ensure you have added the record above at the registrar 'domainname.com', and try again in a little while.
With mxtoolbox, "dig" on Linux and "NSLOOKUP" on Windows, it all shows the right records on different locations. The domain is not verified in any other directory and I have waited for hours now so the record is wordwide published.