Sending OK, Receive NOT OK

[duks]

Hi, I'm a newbie but a big fan of Zimbra.

Just installed Zimbra (ZCS-7.1.1_GA.RHEL) on a Centos 5 (i386) machine using this guide, Zimbra Collaboration Suite Open Source Edition On CentOS | HowtoForge - Linux Howtos and Tutorials.

During installation, I have been warned of the following
- platform: this platform is CentOS5, packages found: RHEL5, this may or may not work.

- port conflict detected: 25 (zimbra-mta)

Apart from those, I think installation was completed properly.

I was able to send email from an account I created on my new Zimbra server to externally hosted addresses, including @live.com. But my problem is receiving incoming emails. I believe the messages reached my Zimbra server but not delivered to the intended mailbox.

I can see from the Administration console that there are messages being held up in the 'Deferred' category with the error/reason: "connect to quake.ourtelekom.net.sb[202.1.180.72]:7025: connection refused". There is one with the the port indicated as 25.

Can someone please assist.

[phoenix]

Originally Posted by duks

I can see from the Administration console that there are messages being held up in the 'Deferred' category with the error/reason: "connect to quake.ourtelekom.net.sb[202.1.180.72]:7025: connection refused". There is one with the the port indicated as 25.

Can someone please assist.

You could find the answer to these questions by searching the forums. Did you disable and stop the default mail server in CentOS? Did you set-up a Split DNS with correct DNS A & MX records and a valid /etc/hosts file?

[duks]

I went through the installations again and this time I don't have any port conflict message or any other error.

I can send messages to any address hosted anywhere fine. I was able to receive emails sent from domain names hosted within the country, except I am not receiving emails from externally hosted domain names, example, from @live.com.

[root@mail ~]# cat /etc/hosts
127.0.0.1 localhost.localdomain localhost
192.168.1.3 mail.ourtelekom.net.sb mail

[root@mail ~]# cat /etc/resolv.conf
search ourtelekom.net.sb
domain ourtelekom.net.sb
nameserver 192.168.1.3
nameserver 202.1.180.72

What could I be possibly missing? Any assistance?

[phoenix]

Originally Posted by duks

What could I be possibly missing? Any assistance?

The answer to this problem is all over the forums as I've already mentioned, did you search? I've already given you the answer to this problem, you need to read the Split DNS article and configure your DNS records, hosts file and resolv.conf as described in that article - you can check your configuration by running all the commands in the 'Verify....' of that article.

[duks]

The guide I followed (Install Zimbra Collaboration Suite 7 on Centos 5.5 – Part 1) includes setting up of DNS so I believe that part is covered.

Here are my verifications;

[root@mail ~]# dig ourtelekom.net.sb mx

; <<>> DiG 9.3.6-P1-RedHat-9.3.6-16.P1.el5 <<>> ourtelekom.net.sb mx
;; global options:  printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 41053
;; flags: qr aa rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 1, ADDITIONAL: 2

;; QUESTION SECTION:
;ourtelekom.net.sb.             IN      MX

;; ANSWER SECTION:
ourtelekom.net.sb.      2592000 IN      MX      10 mail.ourtelekom.net.sb.

;; AUTHORITY SECTION:
ourtelekom.net.sb.      2592000 IN      NS      ns.ourtelekom.net.sb.

;; ADDITIONAL SECTION:
mail.ourtelekom.net.sb. 2592000 IN      A       192.168.1.3
ns.ourtelekom.net.sb.   2592000 IN      A       192.168.1.3

;; Query time: 5 msec
;; SERVER: 192.168.1.3#53(192.168.1.3)
;; WHEN: Thu Aug 18 09:09:48 2011
;; MSG SIZE  rcvd: 105

[root@mail ~]# dig ourtelekom.net.sb any

; <<>> DiG 9.3.6-P1-RedHat-9.3.6-16.P1.el5 <<>> ourtelekom.net.sb any
;; global options:  printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 4024
;; flags: qr aa rd ra; QUERY: 1, ANSWER: 4, AUTHORITY: 0, ADDITIONAL: 2

;; QUESTION SECTION:
;ourtelekom.net.sb.             IN      ANY

;; ANSWER SECTION:
ourtelekom.net.sb.      2592000 IN      SOA     ourtelekom.net.sb. hostmaster.ourtelekom.net.sb. 2011081701 43200 3600 3600000 2592000
ourtelekom.net.sb.      2592000 IN      NS      ns.ourtelekom.net.sb.
ourtelekom.net.sb.      2592000 IN      A       192.168.1.3
ourtelekom.net.sb.      2592000 IN      MX      10 mail.ourtelekom.net.sb.

;; ADDITIONAL SECTION:
ns.ourtelekom.net.sb.   2592000 IN      A       192.168.1.3
mail.ourtelekom.net.sb. 2592000 IN      A       192.168.1.3

;; Query time: 23 msec
;; SERVER: 192.168.1.3#53(192.168.1.3)
;; WHEN: Thu Aug 18 09:11:06 2011
;; MSG SIZE  rcvd: 168

[root@mail ~]# host $(hostname)
mail.ourtelekom.net.sb has address 192.168.1.3

[root@mail ~]# 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
192.168.1.3     mail.ourtelekom.net.sb  mail

[root@mail ~]# cat /etc/resolv.conf
search ourtelekom.net.sb
nameserver 127.0.0.1

[phoenix]

The information you've posted above looks OK but the problem is it confilcts with the information you gave in your original post;

Originally Posted by duks

I can see from the Administration console that there are messages being held up in the 'Deferred' category with the error/reason: "
connect to quake.ourtelekom.net.sb[202.1.180.72]:7025: connection refused". There is one with the the port indicated as 25.

The IP address and the FQDN of the server are different that the one in your DNS regords above. In addition, when I do a check of your DNS records I see the following:

dig ourtelekom.net.sb any

; <<>> DiG 9.7.3-P3 <<>> ourtelekom.net.sb any
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 39469
;; flags: qr rd ra; QUERY: 1, ANSWER: 2, AUTHORITY: 0, ADDITIONAL: 2

;; QUESTION SECTION:
;ourtelekom.net.sb.             IN      ANY

;; ANSWER SECTION:
ourtelekom.net.sb.      86362   IN      NS      ns.ourtelekom.net.sb.
ourtelekom.net.sb.      86362   IN      MX      10 mail.ourtelekom.net.sb.

;; ADDITIONAL SECTION:
mail.ourtelekom.net.sb. 86362   IN      A       192.168.1.3
ns.ourtelekom.net.sb.   86362   IN      A       192.168.1.3

;; Query time: 3 msec
;; SERVER: 192.168.1.10#53(192.168.1.10)
;; WHEN: Thu Aug 18 07:58:20 2011
;; MSG SIZE  rcvd: 105

That shows your private LAN IP and that's incorrect, it should be the public IP address of your server in the public DNS server.

[duks]

Ignore my initial post, I have made some changes to the name. my latest/current should be considered, sorry for the confusion.

Where should I made the change to reflect my public IP?