This reply prompted me to look closer at the ipa_hostname entry within sssd.conf on the
host this morning.
Unlike our other ipa-client's, this box is not managed by Chef and thus the sssd.conf
was copied from another instance and only the ipa_hostname entry changed/entered
manually.
A portion of the actual hostname is 471 but the ipa_hostname entry was 417.
Such a simple miss caused a big headache; it happens.
Thank you Sumit for pointing us in the right direction; very much appreciated.