mcclnx mcc wrote: > I just setup CENTOS 4.7 with latest patches on DELL server. I also configured NTP point to out time server. I found /var/log/messages file every 20 to 30 minutes will generate a error message : > > Mar 15 14:28:15 SER1 ntpd[25037]: sendto(172.29.21.16): Invalid argument > Mar 15 14:45:22 SER1 ntpd[25037]: sendto(172.29.21.16): Invalid argument > Mar 15 15:02:29 SER1 ntpd[25037]: sendto(172.29.21.16): Invalid argument > I'd take a look at /etc/ntpd.conf as it sounds like something is setup wrong in there. is that IP your NTP server? .