John R Pierce wrote: > Gaurav Nangla wrote: > >> I can ping the google.com <http://google.com> ip addresses >> (209.85.231.104) but can't ping the FQDN, obviously DNS is broken. >> >> I can also ping the nameserver ip addresses specified in /etc/resolv.conf. >> > > well, the DNS servers given by your resolv.conf output seem valid from > here.. I recommend doing some more debugging with `host` or similar DNS > diagnostic tools. > > note regular DNS lookups like these tend to use UDP rather than TCP, if > you're behind a NAT firewall which doesn't allow outbound udp port 53 > and connection track the response, then things might not work well. > > > $ host google.com 208.67.220.220 > Using domain server: > Name: 208.67.220.220 > Address: 208.67.220.220#53 > Aliases: > > google.com has address 74.125.19.105 > google.com has address 74.125.19.99 > google.com has address 74.125.19.103 > google.com has address 74.125.19.106 > google.com has address 74.125.19.147 > google.com has address 74.125.19.104 > google.com mail is handled by 400 google.com.s9b2.psmtp.com. > google.com mail is handled by 200 google.com.s9a2.psmtp.com. > google.com mail is handled by 300 google.com.s9b1.psmtp.com. > google.com mail is handled by 100 google.com.s9a1.psmtp.com. > > $ host google.com 208.67.222.222 > Using domain server: > Name: 208.67.222.222 > Address: 208.67.222.222#53 > Aliases: > > google.com has address 74.125.19.105 > google.com has address 74.125.19.147 > google.com has address 74.125.19.99 > google.com has address 74.125.19.103 > google.com has address 74.125.19.104 > google.com has address 74.125.19.106 > google.com mail is handled by 400 google.com.s9b2.psmtp.com. > google.com mail is handled by 200 google.com.s9a2.psmtp.com. > google.com mail is handled by 300 google.com.s9b1.psmtp.com. > google.com mail is handled by 100 google.com.s9a1.psmtp.com. > _______________________________________________ > CentOS mailing list > CentOS at centos.org > http://lists.centos.org/mailman/listinfo/centos > > please try: dig www.google.com @IPofyourDNSserver and send me the output