Yes, don't use check-names or set it to warn. See chapter 06 of the ARM.
Or drop those names (although RFC 2181 allows those in labels, but it also makes clear, that not any label must be allowed as a host name).
And herein lies the problem, this version of Bind seems to ignore the check-names option...
options { version "REFUSED"; directory "/var/named"; check-names master ignore; ...
that _should_ disable named checking the names and therefore refusing to load, should it not?
thanks, jc