DNS Error - none of the MX records resolve to this host

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02-08-2012, 03:29 AM
Eclipse

DNS Error - none of the MX records resolve to this host

Hey guys, so I'm having a bit of an issue ironing out this last DNS problem, I have been following the SplitDNS guide word for word but, when trying to install Zimbra it gives the DNS mismatch error and when I try to startup DNSmasq it shows the address already in use.

Quote:

# /etc/init.d/dnsmasq restart

Starting dnsmasq:
dnsmasq: failed to create listening socket: Address already in use
[FAILED]

I am using CentOS 5.7 x32 at the moment doing some testing. ZCS 7.1.4

Test domain -lulzy.ath.cx

Dnsmasq config

Code:

conf-dir=/etc/dnsmasq.d server=8.8.8.8 server=208.67.222.222 domain=lulzy.ath.cx mx-host=lulzy.ath.cx,mail.lulzy.ath.cx,5 listen-address=127.0.0.1

Here is my hosts file

Quote:

# cat /etc/hosts
# Do not remove the following line, or various programs
# that require network functionality will fail.
127.0.0.1 localhost.localdomain localhost
::1 localhost6.localdomain6 localhost6
192.168.0.111 mail.lulzy.ath.cx mail

My resolv.conf

Quote:

# cat /etc/resolv.conf
; generated by /sbin/dhclient-script
search lulzy.ath.cx
nameserver 127.0.0.1

My named.conf

Quote:

// Default named.conf generated by install of bind-9.2.4-2
options {
directory "/var/named";
dump-file "/var/named/data/cache_dump.db";
statistics-file "/var/named/data/named_stats.txt";
forwarders { 8.8.8.8 ; };
};
include "/etc/rndc.key";
// We are the master server for server.example.com
zone "mail.lulzy.ath.cx" {
type master;
file "/var/named/db.mail.lulzy.ath.cx";
};

My zone file

Quote:

;
; Addresses and other host information.
;
@ IN SOA mail.lulzy.ath.cx. hostmaster.mail.lulzy.ath.cx. (
10118 ; Serial
43200 ; Refresh
3600 ; Retry
3600000 ; Expire
2592000 ) ; Minimum
; Define the nameservers and the mail servers
IN NS 192.168.0.111
mail.lulzy.ath.cx. IN MX 10 mail.lulzy.ath.cx.
mail.lulzy.ath.cx. IN A 192.168.0.111

Ignore the formatting errors, its 5:30am, I'm too tired to fix it right now =(

Where am I going wrong?
02-08-2012, 03:39 AM
phoenix

Quote:

Originally Posted by Eclipse

Where am I going wrong?

If you've been reading the Split DNS article you should have read what diagnostic information is required - you're missing some of it. You've also posted configuration information from dnsmasq & BIND and dnsmasq is apparently unable to start so the question is, which DNS server are you using? Please also provide all the information listed in the 'Verify....' section of the Split DNS article.
02-08-2012, 12:00 PM
Eclipse

Quote:

Originally Posted by phoenix

If you've been reading the Split DNS article you should have read what diagnostic information is required - you're missing some of it. You've also posted configuration information from dnsmasq & BIND and dnsmasq is apparently unable to start so the question is, which DNS server are you using? Please also provide all the information listed in the 'Verify....' section of the Split DNS article.

Ah, right sorry.

The DNS forwarder I'm using is 8.8.8.8, the resolv.conf is set to use 127.0.0.1....

Code:

# dig lulzy.ath.cx mx ; <<>> DiG 9.3.6-P1-RedHat-9.3.6-16.P1.el5_7.1 <<>> lulzy.ath.cx mx ;; global options: printcmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 57377 ;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 0 ;; QUESTION SECTION: ;lulzy.ath.cx. IN MX ;; AUTHORITY SECTION: ath.cx. 600 IN SOA ns1.dyndns.org. hostmaster.dyndns.org. 2493600098 600 300 604800 600 ;; Query time: 74 msec ;; SERVER: 127.0.0.1#53(127.0.0.1) ;; WHEN: Wed Feb 8 13:58:02 2012 ;; MSG SIZE rcvd: 91

Code:

# dig lulzy.ath.cx any ; <<>> DiG 9.3.6-P1-RedHat-9.3.6-16.P1.el5_7.1 <<>> lulzy.ath.cx any ;; global options: printcmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 17192 ;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 0 ;; QUESTION SECTION: ;lulzy.ath.cx. IN ANY ;; ANSWER SECTION: lulzy.ath.cx. 60 IN A 50.82.204.232 ;; Query time: 81 msec ;; SERVER: 127.0.0.1#53(127.0.0.1) ;; WHEN: Wed Feb 8 13:58:35 2012 ;; MSG SIZE rcvd: 46

Code:

# host lulzy.ath.cx lulzy.ath.cx has address 50.82.204.232

Code:

# host mail.lulzy.ath.cx mail.lulzy.ath.cx is an alias for lulzy.ath.cx. lulzy.ath.cx has address 50.82.204.232

I think that is all of it.....
02-08-2012, 12:44 PM
phoenix

Quote:

Originally Posted by Eclipse

I think that is all of it.....

That isn't all of the information that's asked for in the article, you've missed running some of the commands. The output you've posted so far shows that you have no MX record.
02-08-2012, 01:37 PM
Eclipse

Quote:

Originally Posted by phoenix

That isn't all of the information that's asked for in the article, you've missed running some of the commands. The output you've posted so far shows that you have no MX record.

This is the last thing I can see

Code:

# host $(hostname) lulzy.ath.cx has address 50.82.204.232

Isn't there an MX record set in the zone file?

If I missed something can you please point out what it is....
02-09-2012, 12:01 AM
phoenix

Quote:

Originally Posted by Eclipse

Isn't there an MX record set in the zone file?

There appears to be one in the file you've posted but there isn't any response from the DNS server that shows an MX record - that's the problem.
02-09-2012, 12:03 AM
Eclipse

Quote:

Originally Posted by phoenix

There appears to be one in the file you've posted but there isn't any response from the DNS server that shows an MX record - that's the problem.

Ah okay, that's probably just a limitation of dynDNS sub domains, is there any thing I can do for dnsmasq failing?
02-09-2012, 12:16 AM
phoenix

Quote:

Originally Posted by Eclipse

Ah okay, that's probably just a limitation of dynDNS sub domains,...

That shouldn't be a problem, I used dynDNS a long time ago for a mail server without problems.

Quote:

Originally Posted by Eclipse

... is there any thing I can do for dnsmasq failing?

According to the error message port 53 is already in use, I'm slightly confused here - aren't you using BIND (isn't that what you said the config files were for)?
02-09-2012, 12:26 AM
Eclipse

Quote:

Originally Posted by phoenix

That shouldn't be a problem, I used dynDNS a long time ago for a mail server without problems.

According to the error message port 53 is already in use, I'm slightly confused here - aren't you using BIND (isn't that what you said the config files were for)?

Well the .ath.cx domains arent real domaines, they are dyndns subdomains that were free to use.

I can select add MX record to that domain but when I type in the same domain its like it just disappears...

On the SplitDNS guide, I had assume that you needed dnsmasq along with BIND, is dnsmasq equivalent to BIND then where its not required?
02-09-2012, 12:29 AM
phoenix

Quote:

Originally Posted by Eclipse

On the SplitDNS guide, I had assume that you needed dnsmasq along with BIND, is dnsmasq equivalent to BIND then where its not required?

You can only run one DNS server on a server, the dnsmasq configuration is only there as an alternative (some people find it easier to configure).

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