Trouble Sending mail - All Messages deferred!

[SiteDiscovery]

When I try to send mail to hotmail.com I get a connection timed out.
When i try to send mail to sbcglobal.net I get a connection timed out.
When i try to send mail to juno.com I get a connection refused.
When i try to send mail to yahoo.com I get a connection timed out.
The messages to these domains just sit in the deferred queue.

This server has been up and running for about 3 weeks. It is the open source install. I can recieve e-mail all day long. I have sent test mail from each of these domains and I get them just fine. When I try to reply or create new messages, they just sit in deferred.

I can telnet to the juno.com, hotmail.com, and sbcglobal.net e-mail servers port 25 from the zimbra server. But when I check the errors in the deferred status, they say either connection timed out or refused.

I'm confused. Is there a way to get a little more info out of the server? I really need to get the mail flowing. Anyone have any idea why the server is not delivering to these domains??

System:
CentOS 4.3
Pentium 4 3.2Ghz
512MB RAM
2 SATA HDD RAID 1
Thanks!!!
Let me know what I need to post and I'll put it up asap!

Here is the tail -n 40 of the zimbra log when I tried to resend the mail to juno.com.
**********************
Dec 30 23:08:03 zcs zimbramon[12093]: 12093:info: 2006-12-30 23:08:01, STATUS: zcs.sitediscovery.com: antispam: Running
Dec 30 23:08:03 zcs zimbramon[12093]: 12093:info: 2006-12-30 23:08:01, STATUS: zcs.sitediscovery.com: antivirus: Running
Dec 30 23:08:03 zcs zimbramon[12093]: 12093:info: 2006-12-30 23:08:01, STATUS: zcs.sitediscovery.com: ldap: Running
Dec 30 23:08:03 zcs zimbramon[12093]: 12093:info: 2006-12-30 23:08:01, STATUS: zcs.sitediscovery.com: logger: Running
Dec 30 23:08:03 zcs zimbramon[12093]: 12093:info: 2006-12-30 23:08:01, STATUS: zcs.sitediscovery.com: mailbox: Running
Dec 30 23:08:03 zcs zimbramon[12093]: 12093:info: 2006-12-30 23:08:01, STATUS: zcs.sitediscovery.com: mta: Running
Dec 30 23:08:03 zcs zimbramon[12093]: 12093:info: 2006-12-30 23:08:01, STATUS: zcs.sitediscovery.com: snmp: Running
Dec 30 23:08:03 zcs zimbramon[12093]: 12093:info: 2006-12-30 23:08:01, STATUS: zcs.sitediscovery.com: spell: Running
Dec 30 23:08:54 zcs postfix/postsuper[12612]: 837D815FC4D7: requeued
Dec 30 23:08:54 zcs postfix/postsuper[12612]: Requeued: 1 message
Dec 30 23:09:09 zcs postfix/pickup[12078]: 9CAF515FC4D8: uid=502 from=<ccottingham@sitediscovery.com> orig_id=837D815FC4D7
Dec 30 23:09:09 zcs postfix/cleanup[12618]: 9CAF515FC4D8: message-id=<C1BC8D93.12A56%ccottingham@sitediscovery.com>
Dec 30 23:09:09 zcs postfix/qmgr[12077]: 9CAF515FC4D8: from=<ccottingham@sitediscovery.com>, size=3177, nrcpt=1 (queue active)
Dec 30 23:09:09 zcs amavis[5809]: (05809-10) ESMTP::10024 /opt/zimbra/amavisd/tmp/amavis-20061230T181312-05809: <ccottingham@sitediscovery.com> -> <eyecepick@juno.com> SIZE=3177 Received: from zcs.sitediscovery.com ([127.0.0.1]) by localhost (zcs.sitediscovery.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP for <eyecepick@juno.com>; Sat, 30 Dec 2006 23:09:09 -0800 (PST)
Dec 30 23:09:09 zcs amavis[5809]: (05809-10) Checking: QJDERm8u3+pB [127.0.0.1] <ccottingham@sitediscovery.com> -> <eyecepick@juno.com>
Dec 30 23:09:10 zcs postfix/smtpd[12623]: connect from localhost.localdomain[127.0.0.1]
Dec 30 23:09:10 zcs postfix/smtpd[12623]: 1D4CB15FC4D7: client=localhost.localdomain[127.0.0.1]
Dec 30 23:09:10 zcs postfix/cleanup[12618]: 1D4CB15FC4D7: message-id=<C1BC8D93.12A56%ccottingham@sitediscovery.com>
Dec 30 23:09:10 zcs postfix/qmgr[12077]: 1D4CB15FC4D7: from=<ccottingham@sitediscovery.com>, size=3866, nrcpt=1 (queue active)
Dec 30 23:09:10 zcs postfix/smtpd[12623]: disconnect from localhost.localdomain[127.0.0.1]
Dec 30 23:09:10 zcs amavis[5809]: (05809-10) FWD via SMTP: <ccottingham@sitediscovery.com> -> <eyecepick@juno.com>, 250 2.6.0 Ok, id=05809-10, from MTA([127.0.0.1]:10025): 250 Ok: queued as 1D4CB15FC4D7
Dec 30 23:09:10 zcs amavis[5809]: (05809-10) Passed CLEAN, LOCAL [127.0.0.1] [69.62.207.203] <ccottingham@sitediscovery.com> -> <eyecepick@juno.com>, Message-ID: <C1BC8D93.12A56%ccottingham@sitediscovery.com>, mail_id: QJDERm8u3+pB, Hits: -2.774, queued_as: 1D4CB15FC4D7, 520 ms
Dec 30 23:09:10 zcs postfix/smtp[12619]: 9CAF515FC4D8: to=<eyecepick@juno.com>, relay=127.0.0.1[127.0.0.1], delay=16, status=sent (250 2.6.0 Ok, id=05809-10, from MTA([127.0.0.1]:10025): 250 Ok: queued as 1D4CB15FC4D7)
Dec 30 23:09:10 zcs postfix/qmgr[12077]: 9CAF515FC4D8: removed
Dec 30 23:09:10 zcs postfix/smtp[12087]: connect to juno.com[64.136.21.200]: Connection refused (port 25)
Dec 30 23:09:10 zcs postfix/smtp[12087]: connect to juno.com[64.136.29.200]: Connection refused (port 25)
Dec 30 23:09:10 zcs postfix/smtp[12087]: 1D4CB15FC4D7: to=<eyecepick@juno.com>, relay=none, delay=0, status=deferred (connect to juno.com[64.136.29.200]: Connection refused)
********************************************
And here is the tail -n 40 of the Zimbra log when I try to send to yahoo.com
********************************************
Dec 30 23:14:09 zcs postfix/pickup[12078]: 1363D15FC4D8: uid=502 from=<ccottingham@sitediscovery.com> orig_id=8B37015FC4EF
Dec 30 23:14:09 zcs postfix/cleanup[17664]: 1363D15FC4D8: message-id=<C1BC998D.12A58%ccottingham@sitediscovery.com>
Dec 30 23:14:09 zcs postfix/qmgr[12077]: 1363D15FC4D8: from=<ccottingham@sitediscovery.com>, size=2855, nrcpt=1 (queue active)
Dec 30 23:14:09 zcs amavis[5811]: (05811-09) ESMTP::10024 /opt/zimbra/amavisd/tmp/amavis-20061230T164423-05811: <ccottingham@sitediscovery.com> -> <icepick949@yahoo.com> SIZE=2855 Received: from zcs.sitediscovery.com ([127.0.0.1]) by localhost (zcs.sitediscovery.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP for <icepick949@yahoo.com>; Sat, 30 Dec 2006 23:14:09 -0800 (PST)
Dec 30 23:14:09 zcs amavis[5811]: (05811-09) Checking: xJdiaE85fIbE [127.0.0.1] <ccottingham@sitediscovery.com> -> <icepick949@yahoo.com>
Dec 30 23:14:09 zcs amavis[5811]: (05811-09) cached 9a51a70eb96da7e39b1d8f593d0af9e4 from <ccottingham@sitediscovery.com> (0,1)
Dec 30 23:14:09 zcs postfix/smtpd[17669]: connect from localhost.localdomain[127.0.0.1]
Dec 30 23:14:09 zcs postfix/smtpd[17669]: 53E0815FC4EF: client=localhost.localdomain[127.0.0.1]
Dec 30 23:14:09 zcs postfix/cleanup[17664]: 53E0815FC4EF: message-id=<C1BC998D.12A58%ccottingham@sitediscovery.com>
Dec 30 23:14:09 zcs postfix/qmgr[12077]: 53E0815FC4EF: from=<ccottingham@sitediscovery.com>, size=3012, nrcpt=1 (queue active)
Dec 30 23:14:09 zcs postfix/smtpd[17669]: disconnect from localhost.localdomain[127.0.0.1]
Dec 30 23:14:09 zcs amavis[5811]: (05811-09) FWD via SMTP: <ccottingham@sitediscovery.com> -> <icepick949@yahoo.com>, 250 2.6.0 Ok, id=05811-09, from MTA([127.0.0.1]:10025): 250 Ok: queued as 53E0815FC4EF
Dec 30 23:14:09 zcs amavis[5811]: (05811-09) Passed CLEAN, LOCAL [127.0.0.1] [69.62.207.203] <ccottingham@sitediscovery.com> -> <icepick949@yahoo.com>, Message-ID: <C1BC998D.12A58%ccottingham@sitediscovery.com>, mail_id: xJdiaE85fIbE, Hits: -2.685, queued_as: 53E0815FC4EF, 324 ms
Dec 30 23:14:09 zcs postfix/smtp[17666]: 1363D15FC4D8: to=<icepick949@yahoo.com>, relay=127.0.0.1[127.0.0.1], delay=14, status=sent (250 2.6.0 Ok, id=05811-09, from MTA([127.0.0.1]:10025): 250 Ok: queued as 53E0815FC4EF)
Dec 30 23:14:09 zcs postfix/qmgr[12077]: 1363D15FC4D8: removed
Dec 30 23:14:39 zcs postfix/smtp[17670]: connect to yahoo.com[66.94.234.13]: Connection timed out (port 25)
Dec 30 23:14:39 zcs postfix/smtp[17670]: connect to yahoo.com[216.109.112.135]: server dropped connection without sending the initial SMTP greeting (port 25)
Dec 30 23:14:39 zcs postfix/smtp[17670]: 53E0815FC4EF: to=<icepick949@yahoo.com>, relay=none, delay=30, status=deferred (connect to yahoo.com[216.109.112.135]: server dropped connection without sending the initial SMTP greeting)

[SiteDiscovery]

I did some searching and found that my zimbra server is trying to send the mail to everyone's A record.
zmprov gcf zimbraMtaDnsLookupsEnabled = TRUE
zmprov gs zimbraMtaDnsLookupsEnabled = FALSE
Do both of these need to be TRUE?

Do I need to enable DNS lookups someplace else?
I rebooted the server thinking that it might need it after the change.

I am still not sending mail out. Am I missing something?

Thanks!!

[SiteDiscovery]

zmprov gcf zimbraMtaDnsLookupsEnabled = TRUE
zmprov gs zimbraMtaDnsLookupsEnabled = TRUE

I am sending mail!!

I didnt realize that DNS was so critical. I also didn't realize that I had to enable DNS lookups in 2 locations: Global and Servers.


This forum ROCKS...

[uscell]

Thanks, a lot ...

[guigsilva]

Some thing for me, great help!!!

[goran]

Thanks man ... you saved my night .. I can go to bed now.

[raul_denia]

We have set the both variables to TRUE and messages to yahoo still deferred.

Do we need to restart zimbra server or something like that?

Thanks.

[buggz]

i am having the same problem guys, All my emails cannot be delivered now, even the local ones,
the message:

Sep  3 13:43:05 ras postfix/smtp[4721]: 1E274621437: to=<kuzangac@cbzbs.co.zw>, orig_to=<all@cbzbs.co.zw>, relay=127.0.0.1[127.0.0.1]:10024, delay=1373, delays=1275/37/0.05/61, dsn=4.5.0, status=deferred (host 127.0.0.1[127.0.0.1] said: 451 4.5.0 From MTA([127.0.0.1]:10025) during fwd-connect (Negative greeting:  at (eval 71) line 459, <GEN14> line 433.): id=04706-01 (in reply to end of DATA command))
Sep  3 13:43:05 ras postfix

is displayed and the que is increasing very fast,

i only changed the my networks part and aded 192.168.0.0 /16 instead of 192.168.10.0/23 which was there.

the commands i used where:

zmprov modifyServer ras.cbzbs.co.zw zimbraMtaMyNetworks '127.0.0.0/8 192.168.0.0/16

really need help guys