On Tuesday 27 December 2005 17:52, Adel ESSAFI wrote: > hi list > I have instaled a dns server (FC4) as a master on utic.rnu.tn domain > on the server , I don t succeed to resolv the hist ordi1.utic.rnu.tn > How ever, on an other host (xtrem) , I can resolv this host . > do you have an idea of what this problem could be > thanks > ON THE SERVER > [root@localhost named]# hostname > localhost.localdomain > [root@localhost named]# ping ordi1.utic.rnu.tn > ping: unknown host ordi1.utic.rnu.tn > [root@localhost named]# > ON THE HOST > [root@xtrem ~]# hostname > xtrem > [root@xtrem ~]# ping ordi1.utic.rnu.tn > PING ordi1.utic.rnu.tn (193.95.34.232) 56(84) bytes of data. > 64 bytes from 193.95.34.232: icmp_seq=0 ttl=64 time=0.048 ms > 64 bytes from 193.95.34.232: icmp_seq=1 ttl=64 time=0.030 ms > > --- ordi1.utic.rnu.tn ping statistics --- > 2 packets transmitted, 2 received, 0% packet loss, time 5022ms > rtt min/avg/max/mdev = 0.030/0.039/0.048/0.009 ms, pipe 2 > [root@xtrem ~]# More than likely, you forgot to list 127.0.0.1 as a nameserver in /etc/resolv.conf on the server "localhost" If that isn't it - check nsswitch.conf and make sure that the line that starts with hosts: has dns listed as one of the entries... Peter.