We are in the process of setting up an spf record for my email domain. Testing.com currently not spf records for this domain with my external dns provider. I have a another email domain called abc.testing.com that has a valid spf record set up for
it. The Mx records for abc.testing.com and testing.com point to different providers.
Can I set up a new testing.com spf txt record without effecting the abc.testing.com or should the txt records be merged.
