> domain.tld IN CNAME someotherdomain.tld
> *.domain.tld IN CNAME someotherdomain.tld
> domain.tld IN MX 10 somemailserver.tld
CNAME and other data is not allowed (even if you can shove it into the
database ... *sighs*) Most servers break on that.
Remove the CNAME at the zone apex.
-JP