can ping LAN IP, not domain name or WAN IP

[NoDoze]

I can ping the LAN IP, dig, and nslookup mail.domain.com

But when I ONLY ping the domain mail.domain.com it says host unreachable...?

firewalls, iptables all off on host, server and router....makes no difference.

I'm guessing its a DNS issue, but where to look?

Any ideas?

Thanks!

[phoenix]

I'm guessing its a DNS issue, but where to look?

Any ideas?

You could start with all the obvious questions. Is the Zimbra server actually up? Is your DNS server actually up and reachable? What does the following show:

su - zimbra 
zmcontrol status

Post the output of the following commands (run on the ZImbra server):

cat /etc/hosts
cat /etc/resolv.conf
dig yourdomain.com any
dig yourdomain.com mx
host `hostname`  <-- us ethat exact command with backticks not single quotes

[veronica]

What do you mean by ping domain mail.domain.com ? is it the hostname of the machine ? Whatoes it point to in DNS ?

[NoDoze]

yes, zimbra server is running

hostname is mail.domain.com

resolv.conf gives:

nameserver 192.168.1.248
nameserver 192.168.1.190
domain localdomain
search domain.com

digs via the mail server all pull up 192.168.1.248 as the DNS which is the mail server's IP

I'm able to access mail.domain.com via the browser and email is all functioning ok.

Via the ip 192.168.1.248 ping gives a return.
ONLY ping and samba say mail.domain.com is unreachable...?

What could cause this?

Thanks.

[y@w]

If it comes back correctly from a dig but can't be pinged, it sounds like an issue with the hosts file.

[phoenix]

What could cause this?

Please post the output of the commands that I've asked you to run.

[NoDoze]

figured it out!!!

our DNS server here is 192.168.1.190
and the email server, having it's own DNS server, is 192.168.1.248

When I switch my DNS from 192.168.1.190 to 192.168.1.248 it worked!
I was able to ping mail.domain.com!

So now my question is, 192.168.1.190 is our main DNS server, why are the two DNS servers not able to talk to each other? How would I set that up?

Thanks.