So, yesterday, HP came and replaced the system board and I had to re-do my iLO configuration as a consequence--so I paid particular attention to the iLO configuration (since I had to repeat it). I discovered that while in the the Intelligent Provisioning mode of operation, and performing the iLO Config, you can give iLO a host name, BUT you cannot change or edit the domain name. Domain name is presented to the user, but there's nothing you can click on to edit it (or as I want to do) delete the entry that is already populated there--presumably by virture of the server going out on its own--either as a function of the Registration process, or by having supplied DNS information in another configuration panel elsewhere.
There appears to be no ability to remove the Domain name, and since this is saved as part of the configuation, even when you get the server all the way up and use iLO's web access to edit the same panel--and even though this field can be cleared (under web access control), you cannot save it empty.
These were my observations--which counter those suggested above about performing a Reset.