[SOLVED] DNS not resolving localhost

[srvlsn]

My installation terminates with the followig message :

Operations logged to /tmp/zmsetup.03122009-115300.log
Setting defaults...can't resolve "localhost" to address at /opt/zimbra/zimbramon/lib/i386-linux-thread-multi/Net/DNS/Resolver/Base.pm line 748.

When I do a 'nslookup localhost' it gives me

** server can't find localhost: NXDOMAIN

My 'localhost -f' returns the FQDN mail.domain.com

I am trying to configure Zimbra behind a firewall. My internal IP is 10.10.10.4. The /etc/hosts, named.conf and zone files are as follows :

/etc/hosts

# Do not remove the following line, or various programs
# that require network functionality will fail.
127.0.0.1 localhost.localdomain localhost
10.10.10.4 mail.domain.com mail

/var/named/chroot/etc/named.conf

//
// Sample named.conf BIND DNS server 'named' configuration file
// for the Red Hat BIND distribution.
//
// See the BIND Administrator's Reference Manual (ARM) for details, in:
// file:///usr/share/doc/bind-*/arm/Bv9ARM.html
// Also see the BIND Configuration GUI : /usr/bin/system-config-bind and
// its manual.
//
options
{
/* make named use port 53 for the source of all queries, to allow
* firewalls to block all ports except 53:
*/
query-source port 53;
query-source-v6 port 53;

// Put files that named is allowed to write in the data/ directory:
directory "/var/named"; // the default
dump-file "data/cache_dump.db";
statistics-file "data/named_stats.txt";
memstatistics-file "data/named_mem_stats.txt";

};
zone "mail.domain.com" IN {
type master;
file "mail.domain.com";
allow-update{none;};
};

zone "locahost." IN {
type master;
file "localhost.zone";
allow-update{none;};
};

include "/etc/rndc.key";

my zone file for mail.domain.com

$TTL 86400
@ IN SOA @ mail.domain.com. (
42 ; serial (d. adams)
3H ; refresh
15M ; retry
1W ; expiry
1D ) ; minimum

@ IN NS mail.domain.com.
IN MX 10 mail.domain.com.
IN A 10.0.10.4

zone file for localhost.zone

$TTL 86400
@ IN SOA @ root (
2009031201 ; serial (d. adams)
3H ; refresh
15M ; retry
1W ; expiry
1D ) ; minimum

IN NS @
IN A 127.0.0.1
IN AAAA ::1

~

The installation stops with the error given in the begining. My local host is not resolving to 127.0.0.1. I hope this is the problem. Can you please help.

Regards-
Srvlsn

[uxbod]

What is in /etc/resolv.conf and /etc/nsswitch.conf ?

[srvlsn]

In the zone file for mail.domain.com, the IP I mentioned was 10.0.10.4. It should be 10.10.10.4. I have corrected this. However, the status remains same.....

My /etc/resolve.conf contains "nameserver localhost"

and /etc/nsswitch.conf is as follows (Have omitted some initial comment lines)

# To use db, put the "db" in front of "files" for entries you want to be
# looked up first in the databases
#
# Example:
#passwd: db files nisplus nis
#shadow: db files nisplus nis
#group: db files nisplus nis

passwd: files
shadow: files
group: files

#hosts: db files nisplus nis dns
hosts: files dns

# Example - obey only what nisplus tells us...
#services: nisplus [NOTFOUND=return] files
#networks: nisplus [NOTFOUND=return] files
#protocols: nisplus [NOTFOUND=return] files
#rpc: nisplus [NOTFOUND=return] files
#ethers: nisplus [NOTFOUND=return] files
#netmasks: nisplus [NOTFOUND=return] files

bootparams: nisplus [NOTFOUND=return] files

ethers: files
netmasks: files
networks: files
protocols: files
rpc: files
services: files

netgroup: nisplus

publickey: nisplus

automount: files nisplus
aliases: files nisplus

[uxbod]

/etc/resolv.conf should have

nameserver 10.10.10.4

[srvlsn]

It WORKED !!!
Thanks a million....

Regards-
Srvlsn

[uxbod]

For reference nameserver should always point to the IP of the DNS server and not the actual FQDN. Glad all is working now

[sudheervk]

my vi /etc/hosts configuration is
127.0.0.1 localhost.localdomain localhost

123.176.41.29 mail.domain.com mail


my vi etc/resolv.conf is
nameserver 202.53.8.8
nameserver 202.53.8.9
nameserver 123.176.41.29

my vi etc/sysconfig/network is
NETWORKING=yes
HOSTNAME=mail

and i configured my pc as a DNS itself with giving the above 123.176.41.29 in both forward and reverse lookup but it is still asking for MX record .
So this is the problem, any suggestions on this please to try out

[phoenix]

Originally Posted by sudheervk

So this is the problem, any suggestions on this please to try out

The answer is alread in this thread (and all over the forums), you have too many entries in your resolv.conf when you should only have one.