[SOLVED] cannot resolv hostname - split DNS trouble

[gerdpeter]

I changed it from "mail.xxx.com" to "mail.xxx.com.", but it didn't seem to make a difference.......

mail:/etc# dig xxx.com

; <<>> DiG 9.3.4 <<>> xxx.com
;; global options: printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: SERVFAIL, id: 6266
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 0, ADDITIONAL: 0

;; QUESTION SECTION:
;xxx.com. IN A

;; Query time: 0 msec
;; SERVER: 10.0.0.7#53(10.0.0.7)
;; WHEN: Sat Jul 5 11:54:05 2008
;; MSG SIZE rcvd: 34

mail:/etc# dig mail.xxx.com

; <<>> DiG 9.3.4 <<>> mail.xxx.com
;; global options: printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: SERVFAIL, id: 571
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 0, ADDITIONAL: 0

;; QUESTION SECTION:
;mail.xxx.com. IN A

;; Query time: 0 msec
;; SERVER: 10.0.0.7#53(10.0.0.7)
;; WHEN: Sat Jul 5 11:54:13 2008
;; MSG SIZE rcvd: 39

mail:/etc# host `hostname`
Host mail not found: 3(NXDOMAIN)

[phoenix]

Does your /etc/network/interfaces file contain the following line:

hostname mail.xxx.com

i.e. the FQDN of your server?

[gerdpeter]

I changed mail.xxx.com to mail.xxx.com. , but it did not make any difference.

Just to try I added mailxxx.com to hostname. No the outside mail doesnot bounce anymore, but it sits in the deffered queue......with th same msg in mail.log...

[gerdpeter]

No just this.....

mail:/etc/network# view interfaces
# This file describes the network interfaces available on your system
# and how to activate them. For more information, see interfaces(5).

# The loopback network interface
auto lo
iface lo inet loopback

# The primary network interface
allow-hotplug eth1
iface eth1 inet static
address 10.0.0.7
netmask 255.255.255.0
network 10.0.0.0
broadcast 10.0.0.255
gateway 10.0.0.1
# dns-* options are implemented by the resolvconf package, if installed
dns-nameservers 10.0.0.1
dns-search xxx.com

auto eth1

[gerdpeter]

I added

hostname mail.xxx.com

to the interfaces file. No change in postfix behavior - still logs :

Jul 5 11:09:46 mail postfix/lmtp[10759]: CAC64480186: to=, relay=none, delay=0.02, delays=0.01/0.01/0/0, dsn=4.4.3, status=deferred (Host or domain name not found. Name service error for name=mail.xxx.com type=A: Host not found, try again)

[gerdpeter]

Hi Bill, did you see anything wrong in "interfaces" ? "dns-nameservers" is set to the router gateway (and dns) adress....not sure if that shoud be 10.0.0.7 (the Zimbra box)

[gerdpeter]

It seems like there is a much broader support community for CentOS 5, so I will scrtch my Debian and retry this install with CentOS 5.

If I still encounter the same DNS issues with Zimbra - then I'll be back :-)

[gerdpeter]

Just for the record - I installed on ContOS 5 nd I now have a functioning email server. I followed the split DNS WIKI page to the letter....my CentOS version did NOT create config files for the te bind install, so I had to create and modify them from the samples. named didn't like that because the deamon had no rights to those files and i had to give permissions to a number of bind config files in order for named to start properly, but in the end it worked and i am exchange free !