We’re migrating our entire system from domain domain1.com to sub.domain2.com. The domain domain2.com is under control of a 3rd party, so in order to continue using certain Cloudflare services such as Workers, we configured a CNAME setup for domains *.sub.domain2.com. Now we need to setup some MX and TXT records e.g. sub.domain2.com but it seems that when using CNAME setup, we can only create CNAME and A records in Cloudflare. We asked the 3rd party to setup those records on their side but turns out it is also impossible since there is a CNAME record (for CNAME setup) for that domain already.
Please provide some information on how to proceed or whether a setup we’re trying to achieve is possible at all.