This issue is most likely a validation bug on the DNS page rather than a real DNS limitation, since CNAME targets are inherently case-insensitive. The error (“Target for CNAME record is invalid”) is probably caused by the system enforcing a lowercase-only pattern when parsing the input, which conflicts with DKIM records from services like Microsoft 365 that may include uppercase characters. As a quick workaround, you can simply convert the entire CNAME target to lowercase before submitting it, which will work correctly in DNS. For a proper fix, the validation logic should be updated to accept both uppercase and lowercase characters or normalize the input to lowercase before validation, ensuring compliance with standard DNS behavior. https://tekken3apkzone.com/
This issue is most likely a validation bug on the DNS page rather than a real DNS limitation, since CNAME targets are inherently case-insensitive. The error (“Target for CNAME record is invalid”) is probably caused by the system enforcing a lowercase-only pattern when parsing the input, which conflicts with DKIM records from services like Microsoft 365 that may include uppercase characters. As a quick workaround, you can simply convert the entire CNAME target to lowercase before submitting it, which will work correctly in DNS. For a proper fix, the validation logic should be updated to accept both uppercase and lowercase characters or normalize the input to lowercase before validation, ensuring compliance with standard DNS behavior. https://tekken3apkzone.com/