First of all
NODE=10.100.2.9
is not legal, and MYDOMAIN is supposed to contain the space-separated list
of all DNS names that the machine is known by in DNS. It is not your
corporate root domain. So:
NODE=[10.100.2.9]
MYDOMAIN=[10.100.2.9]
That being said, you really should make a DNS entry somewhere and give
this host a name. I realize it's on your Intranet but many sites use
an internal DNS. Using the bracketed IP is really only useful for testing
purposes.
Nathan