Incoming mail issue

[engrolsonjr]

Hi. I have installed Zimbra successfully on Fedora 13. I am able to send out mail already, but I am not able to receive emails. My server is behind a NAT router. I need help please in setting up A and MX records. I have read all the articles in WIKI(I think). I also tried split DNS, but I cant seem to follow it correctly. Please advise what my next step should be. I apologize if this issue is common but Im desperate. Please help me out.


[zimbra@CALLTEK ~]$ cat /etc/resolv.conf
search callteknoc.com
nameserver 172.20.1.224

nameserver 4.2.2.2
nameserver 4.2.2.1


####################



[zimbra@CALLTEK ~]$ cat /etc/hosts
127.0.0.1 localhost.localdomain localhost
172.20.1.224 mail.callteknoc.com callteknoc


####################


[zimbra@CALLTEK ~]$ dig callteknoc.com mx

; <<>> DiG 9.7.0-P1-RedHat-9.7.0-9.P1.fc13 <<>> callteknoc.com mx
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 1652
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 0

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

;; AUTHORITY SECTION:
com. 900 IN SOA a.gtld-servers.net. nstld.verisign-grs.com. 1304028758 1800 900 604800 86400

;; Query time: 269 msec
;; SERVER: 4.2.2.2#53(4.2.2.2)
;; WHEN: Fri Apr 29 03:13:43 2011
;; MSG SIZE rcvd: 105


#######################################

[zimbra@CALLTEK ~]$ dig callteknoc.conf any

; <<>> DiG 9.7.0-P1-RedHat-9.7.0-9.P1.fc13 <<>> callteknoc.conf any
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 63781
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 0

;; QUESTION SECTION:
;callteknoc.conf. IN ANY

;; AUTHORITY SECTION:
. 900 IN SOA a.root-servers.net. nstld.verisign-grs.com. 2011042800 1800 900 604800 86400

;; Query time: 420 msec
;; SERVER: 4.2.2.2#53(4.2.2.2)
;; WHEN: Fri Apr 29 03:14:13 2011
;; MSG SIZE rcvd: 108



###################################

[zimbra@CALLTEK ~]$ host `hostname`
Host CALLTEK not found: 3(NXDOMAIN)
[zimbra@CALLTEK ~]$



Can I use xname.org to register my domain since they are providing it for free? Please advise what my next step would be.

[phoenix]

Originally Posted by engrolsonjr

Please advise what my next step would be.

Your next step would be to fix your DNS records. As you're behind a NAT router you need the Split DNS set-up, it should be fairly straightforward to follow.

[engrolsonjr]

Thanks for the quick reply. Im a complete beginner at linux so please bare with me. I have Fedora 13 installed. Following the steps in Split DNS, there are only two options.

Install Bind on Red Hat Enterprise Linux:

[root@CALLTEK calltek]# apt-get install bind9
Command not found.


Configuring dnsmasq on the Zimbra Server:
[root@CALLTEK calltek]# apt-get install bind9
Command not found.


Neither of them would recognize the command. Please help.

[xeon]

apt-get is a Debian/Ubuntu command. You need to use yum

yum install bind

[engrolsonjr]

done. what should I do next? Thanks for the response. Ive been trying to make this work for 2 days already..

[phoenix]

Originally Posted by engrolsonjr

done. what should I do next? Thanks for the response. Ive been trying to make this work for 2 days already..

You need to set-up your DNS A & MX records as per the wiki article.

[engrolsonjr]

Are you referring to Split DNS article? And also, is this set up in the Zimbra server itself or on the DNS server? Thanks for the quick response

[engrolsonjr]

Im stucked at this step:


Edit the named.conf file

Substitute your fully-qualified server name for server.example.com
If named runs in a chroot'ed directory (i.e. /var/named/chroot), named.conf should be placed in
/etc/named/chroot/etc/named.conf and you should create a symbolic link to /etc/named.conf,
i.e. ln -s /etc/named.conf /etc/named/chroot/etc/named.conf
or ln -s /etc/bind/named.conf /etc/bind/named/chroot/etc/named.conf
For Red Hat, edit: /etc/named.conf
For Ubuntu/Kubuntu, edit: /etc/bind/named.conf.options

Substitute your fully-qualified server name for server.example.com ====> where do I set this?

I also get this error messages.

[root@mail calltek]# ln -s /etc/named.conf /etc/named/chroot/etc/named.conf
ln: creating symbolic link `/etc/named/chroot/etc/named.conf': No such file or directory
[root@mail calltek]# ln -s /etc/bind/named.conf /etc/bind/named/chroot/etc/named.conf
ln: creating symbolic link `/etc/bind/named/chroot/etc/named.conf': No such file or directory
[root@mail calltek]#


Im a complete newbie with linux but I can follow instructions quickly

[engrolsonjr]

This is my named.conf in /etc/named.conf


[root@mail calltek]# cat /etc/named.conf
//
// named.conf
//
// Provided by Red Hat bind package to configure the ISC BIND named(8) DNS
// server as a caching only nameserver (as a localhost DNS resolver only).
//
// See /usr/share/doc/bind*/sample/ for example named configuration files.
//

options {
listen-on port 53 { 127.0.0.1; };
listen-on-v6 port 53 { ::1; };
directory "/var/named";
dump-file "/var/named/data/cache_dump.db";
statistics-file "/var/named/data/named_stats.txt";
memstatistics-file "/var/named/data/named_mem_stats.txt";
allow-query { localhost; };
recursion yes;

dnssec-enable yes;
dnssec-validation yes;
dnssec-lookaside auto;

/* Path to ISC DLV key */
bindkeys-file "/etc/named.iscdlv.key";
};

logging {
channel default_debug {
file "data/named.run";
severity dynamic;
};
};

zone "." IN {
type hint;
file "named.ca";
};

include "/etc/named.rfc1912.zones";

[phoenix]

Details of how to install BIND9 on CentOS (it should be similar for Fedora, there may be a better how-to if you google for it): BIND Installation On CentOS | HowtoForge - Linux Howtos and Tutorials

FWIW, if you want a stable server platform for your mail server then I'd recommend using CentOS rather than a bleeding-edge consumer distribution.