In
>;zone for lrxms.net
...
>localhost. IN A 127.0.0.1
...
>n3byy.lrxms.net. IN A 216.254.20.117
Get rid of the period on "localhost".
This is defining a host in the root domain, not
lrxms.net.
and, therefore, is "out-of-zone" data -- that should show up as an error
in syslog.
Without the period, you're defining
localhost.lrxms.net.