Hi,

I don't speak a lot of english but i'm going try to explain me.

I've installed Zimbra NE 7.1 over RHEL6 (64 bits).

The Server have a NAT IP Address (10.X.X.X) and we've got an Public IP Address to this Server.

We've got the domain fenasa.org with the A Record (mail.fenasa.org) point to my Public IP Address. We've got an MX Record point to fenasa.org and the PTR Records correspondents to my IP Address and domain.

By our architecture, we need to make the Split DNS Process, and i did it..

I complete the installation process and i create an account to test.

I can send emails to internet domains but i can't receive from them.

Next can found the outputs from some files and tests:

cat /etc/resolv.conf
search mail.fenasa.org
nameserver 127.0.0.1
nameserver 207.248.224.71
nameserver 207.248.224.72

cat /etc/hosts
127.0.0.1 localhost localhost.localdomain localhost4 localhost4.localdomain4
::1 localhost localhost.localdomain localhost6 localhost6.localdomain6
10.40.1.207 mail.fenasa.org mail

host $(hostname)
mail.fenasa.org has address 189.206.235.76

dig fenasa.org mx

; <<>> DiG 9.8.2rc1-RedHat-9.8.2-0.10.rc1.el6_3.2 <<>> fenasa.org mx
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 59695
;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 3, ADDITIONAL: 4

;; QUESTION SECTION:
;fenasa.org. IN MX

;; ANSWER SECTION:
fenasa.org. 3600 IN MX 10 mail.fenasa.org.

;; AUTHORITY SECTION:
fenasa.org. 86339 IN NS dns.alestra.net.mx.
fenasa.org. 86339 IN NS mail2.alestra.net.mx.
fenasa.org. 86339 IN NS mail1.alestra.net.mx.

;; ADDITIONAL SECTION:
mail.fenasa.org. 3563 IN A 189.206.235.76
mail1.alestra.net.mx. 84371 IN A 201.163.0.44
mail2.alestra.net.mx. 84371 IN A 201.151.64.141
dns.alestra.net.mx. 84371 IN A 201.163.0.43

;; Query time: 3 msec
;; SERVER: 127.0.0.1#53(127.0.0.1)
;; WHEN: Thu Sep 6 13:26:37 2012
;; MSG SIZE rcvd: 185


dig fenasa.org

; <<>> DiG 9.8.2rc1-RedHat-9.8.2-0.10.rc1.el6_3.2 <<>> fenasa.org
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 64185
;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 3, ADDITIONAL: 3

;; QUESTION SECTION:
;fenasa.org. IN A

;; ANSWER SECTION:
fenasa.org. 3600 IN A 189.206.235.76

;; AUTHORITY SECTION:
fenasa.org. 86318 IN NS dns.alestra.net.mx.
fenasa.org. 86318 IN NS mail2.alestra.net.mx.
fenasa.org. 86318 IN NS mail1.alestra.net.mx.

;; ADDITIONAL SECTION:
mail1.alestra.net.mx. 84350 IN A 201.163.0.44
mail2.alestra.net.mx. 84350 IN A 201.151.64.141
dns.alestra.net.mx. 84350 IN A 201.163.0.43

;; Query time: 3 msec
;; SERVER: 127.0.0.1#53(127.0.0.1)
;; WHEN: Thu Sep 6 13:26:58 2012
;; MSG SIZE rcvd: 164


I found the next error on the file zimbra.log

"Sep 6 12:37:06 mail postfix/lmtp[21221]: E1F6E1F980EC: to=, relay=none, delay=63, delays=0.01/0.03/63/0, dsn=4.4.1, status=deferred (connect to mail.fenasa.org[189.206.235.76]:7025: Connection timed out)"

I hope you can help me

Kind Regards

Gustavo Garcia