Seem like your ePO can not resolve DNS for FICPCNUC006 computer. Try check your dns name and nslookup to see it can resolve address of FICPCNUC006 computer.
Please provide addtional details.
What version of the Mcafee Agent are your troubled servers running?
What version of ePO are you using?
Also, can you please perform an agent wake up call from a troubled device and then capture the contents of the agent log file?
Let me know if you need help performing any of the steps above.