DNS error

[leiw]

Hello,

I have a DNS server in local lan (192.168.0.16), following domain setting delegation by namecheap,

$TTL 600
@ IN SOA abc.com. log.abc.com. (
20040721;
28800;
14400;
720000;
86400;
)
@ IN NS abc.com.
@ IN MX 10 mail.abc.com.
@ IN A 1.2.3.4
mail IN A 1.2.3.4
ns1 IN A 1.2.3.4
ns2 IN A 1.2.3.4
www IN A 1.2.3.4

Here is the Zimbra server resolve.conf setting:

search com
nameserver 192.168.0.16


and hosts setting:

127.0.0.1 localhost.localdomain localhost
192.168.0.91 abc.com abc


Here is the error when installing:

Setting defaults... MX: mail.abc.com (1.2.3.4)

Interface: 192.168.0.91
Interface: 127.0.0.1
1.2.3.4
1.2.3.4


DNS ERROR - none of the MX records for abc.com
resolve to this host


I don't know how to solve this DNS problem.

Thx !!

[phoenix]

You should post the output above in the 'code' box (highlight text and hit the # symbol above), it makes it easier to read.

Try the following on the zimbra server:

host `hostname'   <-- type as-is with backticks not single quotes.
dig yourdomain.com mx
dig yourdomain.com any

and post the output.

[dwmtractor]

This part of your record

Originally Posted by leiw

@ IN A 1.2.3.4
mail IN A 1.2.3.4
ns1 IN A 1.2.3.4
ns2 IN A 1.2.3.4
www IN A 1.2.3.4

can't possibly work. Substitute 1.2.3.4 with the actual ip address of your Zimbra box (which appears to be 192.168.0.91).

For a more complete understanding you might want to read one or more of the following wiki articles:

DNS
Split DNS
or the DNS portion of the Ubuntu Install Guide

Cheers,

Dan

[leiw]

Originally Posted by phoenix

You should post the output above in the 'code' box (highlight text and hit the # symbol above), it makes it easier to read.

Try the following on the zimbra server:

host `hostname'   <-- type as-is with backticks not single quotes.
dig yourdomain.com mx
dig yourdomain.com any

and post the output.

-------------------------------------------------------------------------------------

>> host abc.com

abc.com has address 1.2.3.4
abc.com mail is handled by 10 mail.abc.com.

-------------------------------------------------------------------------------------

>> dig abc.com mx

; <<>> DiG 9.4.2 <<>> abc.com mx
;; global options: printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 26777
;; flags: qr aa rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 1, ADDITIONAL: 2

;; QUESTION SECTION:
;abc.com. IN MX

;; ANSWER SECTION:
abc.com. 600 IN MX 10 mail.abc.com.

;; AUTHORITY SECTION:
abc.com. 600 IN NS abc.com.

;; ADDITIONAL SECTION:
mail.abc.com. 600 IN A 1.2.3.4
abc.com. 600 IN A 1.2.3.4

;; Query time: 1 msec
;; SERVER: 192.168.0.16#53(192.168.0.16)
;; WHEN: Wed Jan 9 15:45:37 2008
;; MSG SIZE rcvd: 100

-------------------------------------------------------------------------------------

>> dig abc.com any

; <<>> DiG 9.4.2 <<>> abc.com any
;; global options: printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 35474
;; flags: qr aa rd ra; QUERY: 1, ANSWER: 4, AUTHORITY: 0, ADDITIONAL: 2

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

;; ANSWER SECTION:
abc.com. 600 IN SOA abc.com. log.abc.com.
20040721 28800 14400 720000 86400
abc.com. 600 IN NS abc.com.
abc.com. 600 IN MX 10 mail.abc.com.
abc.com. 600 IN A 1.2.3.4

;; ADDITIONAL SECTION:
abc.com. 600 IN A 1.2.3.4
mail.abc.com. 600 IN A 1.2.3.4

;; Query time: 1 msec
;; SERVER: 192.168.0.16#53(192.168.0.16)
;; WHEN: Wed Jan 9 15:47:51 2008
;; MSG SIZE rcvd: 156

[phoenix]

Let's try this again - what is the actual IP address that you are hiding by changing it to 1.2.3.4 Post the correct IP so we can see what you're doing.

[leiw]

Originally Posted by phoenix

Let's try this again - what is the actual IP address that you are hiding by changing it to 1.2.3.4 Post the correct IP so we can see what you're doing.

----------------------------------------------------------------------
>> host wilson-kwok.com
wilson-kwok.com has address 210.0.214.116
wilson-kwok.com mail is handled by 10 mail.wilson-kwok.com.

----------------------------------------------------------------------

>> dig wilson-kwok.com mx

; <<>> DiG 9.4.2 <<>> wilson-kwok.com mx
;; global options: printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 16881
;; flags: qr aa rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 1, ADDITIONAL: 2

;; QUESTION SECTION:
;wilson-kwok.com. IN MX

;; ANSWER SECTION:
wilson-kwok.com. 600 IN MX 10 mail.wilson-kwok.com.

;; AUTHORITY SECTION:
wilson-kwok.com. 600 IN NS wilson-kwok.com.

;; ADDITIONAL SECTION:
mail.wilson-kwok.com. 600 IN A 210.0.214.116
wilson-kwok.com. 600 IN A 210.0.214.116

;; Query time: 1 msec
;; SERVER: 192.168.0.16#53(192.168.0.16)
;; WHEN: Thu Jan 10 00:23:04 2008
;; MSG SIZE rcvd: 100

----------------------------------------------------------------------

>> dig wilson-kwok.com any

; <<>> DiG 9.4.2 <<>> wilson-kwok.com any
;; global options: printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 13424
;; flags: qr aa rd ra; QUERY: 1, ANSWER: 4, AUTHORITY: 0, ADDITIONAL: 2

;; QUESTION SECTION:
;wilson-kwok.com. IN ANY

;; ANSWER SECTION:
wilson-kwok.com. 600 IN SOA wilson-kwok.com. log.wilson-kwok.com. 20040721 28800 14400 720000 86400
wilson-kwok.com. 600 IN NS wilson-kwok.com.
wilson-kwok.com. 600 IN MX 10 mail.wilson-kwok.com.
wilson-kwok.com. 600 IN A 210.0.214.116

;; ADDITIONAL SECTION:
wilson-kwok.com. 600 IN A 210.0.214.116
mail.wilson-kwok.com. 600 IN A 210.0.214.116

;; Query time: 1 msec
;; SERVER: 192.168.0.16#53(192.168.0.16)
;; WHEN: Thu Jan 10 00:23:50 2008
;; MSG SIZE rcvd: 156

[phoenix]

That's better, the problem is obvious with that information. You'll need a Split DNS set-up so Zimbra (Postfix) can resolve it's internal LAN IP, follow the link that Dan posted above and follow the instructions.

[jcolaco]

I have the same problem. Doing a Split DNS doesn't solve the issue.
I really dont understand what does the zimbra instalation want, my DNS server is working fine and is correctly according to DNSStuff.

The only thing I need to configure is the reverse, can it be the cause of the problem?

[dwmtractor]

Originally Posted by jcolaco

I have the same problem. Doing a Split DNS doesn't solve the issue.
I really dont understand what does the zimbra instalation want, my DNS server is working fine and is correctly according to DNSStuff.

The only thing I need to configure is the reverse, can it be the cause of the problem?

What DNSStuff tells you is immaterial if you have your Zimbra server on a DMZ. DNSStuff by definition is looking at your public IP, which is NOT the ip that Zimbra sees when it looks at its own local network configuration. The question is what happens when you dig for your domain at the command line on the Zimbra server itself. That should return, NOT the public IP address of your mailserver, but the actual, inside-the-dmz (or LAN) ip address that your network adaptor owns. The purpose of split DNS is so that your Zimbra box can self-resolve to an address nobody else in the whole wide world can see or cares about.

You DO need to fix your reverse, but NOT so you can install Zimbra, just so the mail you and your users send out doesn't get canned in everybody else's spam traps. . .