Depends.
Some detection are unrelated to the machine name.
It might certainly increase false positives, for example, if this machine is a legit DC and we didn't discover that as we failed to resolve its name.
Other option, you might have excluded a machine by name only, and if we didn't resolve the name, we will still alert because we can't tell it was excluded.
We normally fail to resolve if the GW cannot get a response form the target machine on one of the ports TCP135/UDP137.
