I am growing weary of some error messages in my syslog - its showing: Jul 3 15:16:38 web rpc.idmapd[14535]: nss_getpwnam: name 'nobody' does not map into domain 'mydomain.com' I have check, my hostname is correct as mydomain.com and I even added a valid entry in /etc/hostname . I have edited my /etc/idmapd.conf to reflect this domain name, this error message log every 10minutes and its becoming frustrating, I do not know why or whats causing it, the nfs server is working ok, with correct entries and now message in the log. I am using centos6 -- Ofcoure, i have substituted mydomain.com with my real domain