Ubuntu DNS problem

[aaros]

This thread got so close to answering my question, but then it fell off!!!

I'm trying to get Zimbra Open Source running on a new installation of Ubuntu 8.04. Everything was going along great, until it began configuration and got an error.

I reviewed the log and this is what I found:

Sat Aug 22 09:16:46 2009 zimbra-ldap is enabled
Sat Aug 22 09:16:46 2009 Initializing ldap...
Sat Aug 22 09:16:46 2009 *** Running as zimbra user: /opt/zimbra/libexec/zmldapinit
IO::Socket::INET: Bad hostname 'mydomain.com' at /opt/zimbra/libexec/zmldapinit line 160.
Sat Aug 22 09:17:28 2009 failed. (5632)
Sat Aug 22 09:17:28 2009

ERROR

Sat Aug 22 09:17:28 2009

Configuration failed

I think (??) I followed the Ubuntu 8.04 LTS Server Install Guide to the "T", but I must have missed something. I've reviewed the guide and my system several times and can't find what I'm missing. ANY help would be greatly appreciated!

Here's what I've got:

HOSTS:

127.0.0.1       localhost.localdomain   localhost
172.17.2.10     mail.mydomain.com  mail

# The following lines are desirable for IPv6 capable hosts
::1     ip6-localhost ip6-loopback
fe00::0 ip6-localnet
ff00::0 ip6-mcastprefix
ff02::1 ip6-allnodes
ff02::2 ip6-allrouters
ff02::3 ip6-allhosts

RESOLV.CONF:

search mydomain.com
nameserver 172.17.2.10

db.mydomain.com:

;
; BIND data file for mydomain.com
;
$TTL    604800
@       IN      SOA     mail.mydomain.com. admin.mydomain.com. {
                         090821         ; Serial
                         604800         ; Refresh
                          86400         ; Retry
                        2419200         ; Expire
                         604800 }       ; Negative Cache TTL
;
@       IN      NS      mail
        IN      MX      10 mail
        IN      A       172.17.2.10
mail    IN      A       172.17.2.10

dig mydomain.com any

; <<>> DiG 9.4.2-P2 <<>> mydomain.com any
;; global options:  printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: SERVFAIL, id: 3027
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 0, ADDITIONAL: 0

;; QUESTION SECTION:
;mydomain.com.     IN      ANY

;; Query time: 0 msec
;; SERVER: 172.17.2.10#53(172.17.2.10)
;; WHEN: Sat Aug 22 10:00:09 2009
;; MSG SIZE  rcvd: 43

dig mydomain.mx

; <<>> DiG 9.4.2-P2 <<>> mydomain.mx
;; global options:  printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 20908
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 0

;; QUESTION SECTION:
;mydomain.mx.      IN      A

;; AUTHORITY SECTION:
mx.                     1800    IN      SOA     m.mx-ns.mx. hostmaster.nic.mx. 68 3600 900 604800 1800

;; Query time: 105 msec
;; SERVER: 172.17.2.10#53(172.17.2.10)
;; WHEN: Sat Aug 22 10:01:01 2009
;; MSG SIZE  rcvd: 101

host `hostname`

Host mail not found: 3(NXDOMAIN)

Thanks in advance for any help you might offer!

[iway]

Well, "servfail" tells you that there is an error in your Bind configuration!

[aaros]

Thanks for the quick reply! Does anything stand out to you in here?

named.conf.options

options {
        directory "/var/cache/bind";

        query-source address * port 53;

        forwarders {
                XX.XX.X.X; XX.XXX.XXX.XXX;
        };

        auth-nxdomain no;    # conform to RFC1035
        // listen-on-v6 { any; };
};

My named.conf.local is:

        zone "mydomain.com"        {
                type master;
                file "/etc/bind/db.mydomain.com";
        };

[iway]

Not explicitly. Just follow the Bind setup guide posted in the Wiki here somewhere. That works.

[phoenix]

Originally Posted by aaros

This thread got so close to answering my question, but then it fell off!!!

Did you make the change to nsswitch.conf mentioned in the first post?

[aaros]

I read through that, and I think I've got it:

# /etc/nsswitch.conf
#
# Example configuration of GNU Name Service Switch functionality.
# If you have the `glibc-doc-reference' and `info' packages installed, try:
# `info libc "Name Service Switch"' for information about this file.

passwd:         compat
group:          compat
shadow:         compat

hosts:          files mdns4_minimal [NOTFOUND=return] dns mdns4
networks:       files

protocols:      db files
services:       db files
ethers:         db files
rpc:            db files

netgroup:       nis

Unless I misunderstood the thread...?

[phoenix]

You hosts line should be the following:

hosts:          files dns mdns

not the entry that you have.

[aaros]

Thanks for your patience with me on this -- and your help.

Originally Posted by phoenix

You hosts line should be the following:

hosts:          files dns mdns

not the entry that you have.

I've made the modification and restarted. I'm still getting the "SERVFAIL" error.

I ran:

aaros@mail:/$ host mydomain.com
Host mydomain.com.mydomain.com not found: 2(SERVFAIL)

Is that an indicator of where the problem might be?

Do you have any other ideas?

Many thanks!

Ryan

[phoenix]

This thread really is different to the original place you posted so I've split it off into it's own thread.

A better command to run would be the following:

host `hostname`  <-- note the backticks not single quotes

although I'd expect that to give you the same result.

At the moment I'm somewhat stumped with this, your DNS appears to be OK and it should work. A couple of questions: is this a 64bit installation; is it in a VM of any kind; how much RAM on this server?

[aaros]

Right on the money. It did exactly as you suspected:

aaros@mail:/$ host `hostname`
Host mail not found: 3(NXDOMAIN)

It's a 32Bit Install, and my server has 2 GB RAM.

Is there any other diagnotic information I can pull that might help with this?

Thanks very much.