SMTP problem

[yk11]

I've been struggling with what seems like an SMTP problem for a few days now (I'm stubborn that way and like to resolve things myself...), but now am turning to you for help (finally came to my senses).

I am running a single server Zimbra install on Ubuntu 6.06 LTS server (non-LAMP install) within VMWare on Windows XP host. The install and configuration went fine after reading a few guides on various sites, including the Zimbra forums (see here for main install and here for split DNS config using bind9).

Overall, the install went well. I can send email between users on the server, but not send/receive externally. All messages end up as deferred due to connection time-outs.

I have tried several things, including several uninstall/install cycles, but to no avail. I also verified that the A and MX records are correct, etc.

I believe the problem is in the SMTP setup, as there in no response from external telnet session into the server on port 25 (internally it's fine).

I tried the various diagnostic methods found on the wiki and other places, but don't seem to be able to identify the specific problem.

Here is what's in the /var/log/zimbra.log file:

Jan 22 00:40:39 mail postfix/qmgr[19792]: 0343CCB587: from=<yair@yairkrauze.com>, size=1143, nrcpt=1 (queue active)
Jan 22 00:41:09 mail postfix/smtp[19795]: connect to krauze.net[65.254.40.226]: Connection timed out (port 25)
Jan 22 00:41:09 mail postfix/smtp[19795]: 0343CCB587: to=<yair@krauze.net>, relay=none, delay=269, delays=239/0.08/30/0, dsn=4.4.1, status=deferred (connect to krauze.net[65.254.40.226]: Connection timed out)

I'm hoping you can help me...

Thanks.

[uscell]

Hello,

Check firewall settings and if possibel disable firewall and try telnet
your question indicate that bind is not properly installed please check A record and restart bind
try this command " nslookup <your domain name > it must return your internal address which actually configured with your Lan card.

Thanks,
Yukari !!!

[bdial]

in opensuse there is a sysconfig option SMTPD_LISTEN_REMOTE that is set to no by default. this makes it so the smtp server only listens to hosts on it's network or maybe localhost i can't remember. that bit me in the rear a few times. maybe there is something like this in ubuntu as well?

[yk11]

Hello,

Check firewall settings and if possibel disable firewall and try telnet
your question indicate that bind is not properly installed please check A record and restart bind
try this command " nslookup <your domain name > it must return your internal address which actually configured with your Lan card.

Thanks,
Yukari !!!

I have verified that it's all ok, yet SMTP doesn't work...

yair@mail:~$ nslookup yairkrauze.com
Server:         192.168.0.11
Address:        192.168.0.11#53

Name:   yairkrauze.com
Address: 192.168.0.11

root@mail:~# host -t mx yairkrauze.com
yairkrauze.com mail is handled by 10 mail.yairkrauze.com.
root@mail:~# host -t a mail.yairkrauze.com
mail.yairkrauze.com has address 192.168.0.11

It looks like my ISP is blocking port 25. I'll have to find a work-around.