Hello,
I use Release 6.0.1_GA_1816.UBUNTU8_64 UBUNTU8_64 FOSS edition, the smtp host is relayed. Everything works fine in webmail, i can send an receive messages without problems, but when i try to configure an account in Thunderbird, I can receive email and when i send a message it display no error messages, looks like it run ok instead the fact that the message is not delivered. If i try the same operation in Outlook 2007 it all works just fine.

here is the /opt/zimbra/log/zimbra.log for the both situation (Outlook anda Thunderbird), I can see the error returned by the relayed host, but i don't know how to fix it :

Code:
OutLook 2007

Oct  7 09:27:18 mail postfix/smtpd[17819]: connect from unknown[192.168.10.126]
Oct  7 09:27:18 mail postfix/smtpd[17819]: setting up TLS connection from unknown[192.168.10.126]
Oct  7 09:27:18 mail postfix/smtpd[17819]: Anonymous TLS connection established from unknown[192.168.10.126]: TLSv1 with cipher AES128-SHA (128/128 bits)
Oct  7 09:27:18 mail saslauthd[649]: zmauth: authenticating against elected url 'https://mail.modelo.local:7071/service/admin/soap/' ...
Oct  7 09:27:18 mail saslauthd[649]: zmpost: url='https://mail.modelo.local:7071/service/admin/soap/' returned buffer->data='<soap:Envelope xmlns:soap="http://www.w3.org/2003/05/soap-envelope"><soap:Header><context xmlns="urn:zimbra"><change token="30618"/></context></soap:Header><soap:Body><AuthResponse xmlns="urn:zimbraAccount"><authToken>0_8174cb8b304e1243623eaac267b3e359f9aea549_69643d33363a31386539303735612d353734322d343235322d396338342d3733616561366533373461303b6578703d31333a313235353039313233383639373b747970653d363a7a696d6272613b</authToken><lifetime>172799999</lifetime><skin>yahoo</skin></AuthResponse></soap:Body></soap:Envelope>', hti->error=''
Oct  7 09:27:18 mail saslauthd[649]: auth_zimbra: lucasmoreira auth OK
Oct  7 09:27:18 mail postfix/smtpd[17819]: BA3F51230001: client=unknown[192.168.10.126], sasl_method=LOGIN, sasl_username=lucasmoreira
Oct  7 09:27:18 mail postfix/cleanup[17822]: BA3F51230001: message-id=<000a01ca474a$d6ffc9c0$84ff5d40$@com.br>
Oct  7 09:27:18 mail postfix/qmgr[644]: BA3F51230001: from=<lucasmoreira@construtoramodelo.com.br>, size=3126, nrcpt=1 (queue active)
Oct  7 09:27:18 mail amavis[30720]: (30720-14) ESMTP::10024 /opt/zimbra/data/amavisd/tmp/amavis-20091007T051147-30720: <lucasmoreira@construtoramodelo.com.br> -> <lucaspfmoreira@gmail.com> SIZE=3126 Received: from mail.modelo.local ([127.0.0.1]) by localhost (mail.modelo.local [127.0.0.1]) (amavisd-new, port 10024) with ESMTP for <lucaspfmoreira@gmail.com>; Wed,  7 Oct 2009 09:27:18 -0300 (BRT)
Oct  7 09:27:18 mail amavis[30720]: (30720-14) Checking: FubpB7jDI0+U [192.168.10.126] <lucasmoreira@construtoramodelo.com.br> -> <lucaspfmoreira@gmail.com>
Oct  7 09:27:21 mail postfix/smtpd[17819]: disconnect from unknown[192.168.10.126]
Oct  7 09:27:29 mail postfix/smtpd[17831]: connect from localhost[127.0.0.1]
Oct  7 09:27:29 mail postfix/smtpd[17831]: D98E01230002: client=localhost[127.0.0.1]
Oct  7 09:27:29 mail postfix/cleanup[17822]: D98E01230002: message-id=<000a01ca474a$d6ffc9c0$84ff5d40$@com.br>
Oct  7 09:27:29 mail postfix/smtpd[17831]: disconnect from localhost[127.0.0.1]
Oct  7 09:27:29 mail postfix/qmgr[644]: D98E01230002: from=<lucasmoreira@construtoramodelo.com.br>, size=3588, nrcpt=1 (queue active)
Oct  7 09:27:29 mail amavis[30720]: (30720-14) FWD via SMTP: <lucasmoreira@construtoramodelo.com.br> -> <lucaspfmoreira@gmail.com>, 250 2.0.0 Ok, id=30720-14, from MTA([127.0.0.1]:10025): 250 2.0.0 Ok: queued as D98E01230002
Oct  7 09:27:29 mail amavis[30720]: (30720-14) Passed CLEAN, LOCAL [192.168.10.126] [192.168.10.126] <lucasmoreira@construtoramodelo.com.br> -> <lucaspfmoreira@gmail.com>, Message-ID: <000a01ca474a$d6ffc9c0$84ff5d40$@com.br>, mail_id: FubpB7jDI0+U, Hits: -1.895, size: 3125, queued_as: D98E01230002, 11083 ms
Oct  7 09:27:29 mail postfix/smtp[17823]: BA3F51230001: to=<lucaspfmoreira@gmail.com>, relay=127.0.0.1[127.0.0.1]:10024, delay=11, delays=0.07/0.03/0.01/11, dsn=2.0.0, status=sent (250 2.0.0 Ok, id=30720-14, from MTA([127.0.0.1]:10025): 250 2.0.0 Ok: queued as D98E01230002)
Oct  7 09:27:29 mail postfix/qmgr[644]: BA3F51230001: removed
Oct  7 09:27:30 mail postfix/smtp[17834]: D98E01230002: to=<lucaspfmoreira@gmail.com>, relay=smtp.construtoramodelo.com.br[200.234.205.213]:25, delay=0.35, delays=0.02/0.06/0.14/0.13, dsn=2.0.0, status=sent (250 ok 1254919030 qp 7617)
Oct  7 09:27:30 mail postfix/qmgr[644]: D98E01230002: removed


Thunderbird

Oct  7 09:28:08 mail postfix/smtpd[18307]: connect from unknown[192.168.10.2]
Oct  7 09:28:08 mail postfix/smtpd[18307]: setting up TLS connection from unknown[192.168.10.2]
Oct  7 09:28:08 mail postfix/smtpd[18307]: Anonymous TLS connection established from unknown[192.168.10.2]: TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)
Oct  7 09:28:08 mail saslauthd[645]: zmauth: authenticating against elected url 'https://mail.modelo.local:7071/service/admin/soap/' ...
Oct  7 09:28:08 mail saslauthd[645]: zmpost: url='https://mail.modelo.local:7071/service/admin/soap/' returned buffer->data='<soap:Envelope xmlns:soap="http://www.w3.org/2003/05/soap-envelope"><soap:Header><context xmlns="urn:zimbra"><change token="30618"/></context></soap:Header><soap:Body><AuthResponse xmlns="urn:zimbraAccount"><authToken>0_fe451f02efe1869aab1a0319a6983456e590ccb7_69643d33363a31386539303735612d353734322d343235322d396338342d3733616561366533373461303b6578703d31333a313235353039313238383930343b747970653d363a7a696d6272613b</authToken><lifetime>172799999</lifetime><skin>yahoo</skin></AuthResponse></soap:Body></soap:Envelope>', hti->error=''
Oct  7 09:28:08 mail saslauthd[645]: auth_zimbra: lucasmoreira@construtoramodelo.com.br auth OK
Oct  7 09:28:09 mail postfix/smtpd[18307]: 079AE1230001: client=unknown[192.168.10.2], sasl_method=PLAIN, sasl_username=lucasmoreira@construtoramodelo.com.br
Oct  7 09:28:09 mail postfix/cleanup[17822]: 079AE1230001: message-id=<4ACC8B8E.8090203@construtormodelo.com.br>
Oct  7 09:28:09 mail postfix/qmgr[644]: 079AE1230001: from=<lucasmoreira@construtormodelo.com.br>, size=570, nrcpt=1 (queue active)
Oct  7 09:28:09 mail postfix/smtpd[18307]: disconnect from unknown[192.168.10.2]
Oct  7 09:28:09 mail amavis[30696]: (30696-10) ESMTP::10024 /opt/zimbra/data/amavisd/tmp/amavis-20091007T044058-30696: <lucasmoreira@construtormodelo.com.br> -> <lucaspfmoreira@gmail.com> SIZE=570 Received: from mail.modelo.local ([127.0.0.1]) by localhost (mail.modelo.local [127.0.0.1]) (amavisd-new, port 10024) with ESMTP for <lucaspfmoreira@gmail.com>; Wed,  7 Oct 2009 09:28:09 -0300 (BRT)
Oct  7 09:28:09 mail amavis[30696]: (30696-10) Checking: eRn9npw-c2Uf [192.168.10.2] <lucasmoreira@construtormodelo.com.br> -> <lucaspfmoreira@gmail.com>
Oct  7 09:28:14 mail zmmailboxdmgr[18541]: status requested
Oct  7 09:28:14 mail zmmailboxdmgr[18541]: status OK
Oct  7 09:28:16 mail postfix/smtpd[17831]: connect from localhost[127.0.0.1]
Oct  7 09:28:17 mail postfix/smtpd[17831]: 0625D1230002: client=localhost[127.0.0.1]
Oct  7 09:28:17 mail postfix/cleanup[17822]: 0625D1230002: message-id=<4ACC8B8E.8090203@construtormodelo.com.br>
Oct  7 09:28:17 mail postfix/qmgr[644]: 0625D1230002: from=<lucasmoreira@construtormodelo.com.br>, size=1032, nrcpt=1 (queue active)
Oct  7 09:28:17 mail postfix/smtpd[17831]: disconnect from localhost[127.0.0.1]
Oct  7 09:28:17 mail amavis[30696]: (30696-10) FWD via SMTP: <lucasmoreira@construtormodelo.com.br> -> <lucaspfmoreira@gmail.com>,BODY=7BIT 250 2.0.0 Ok, id=30696-10, from MTA([127.0.0.1]:10025): 250 2.0.0 Ok: queued as 0625D1230002
Oct  7 09:28:17 mail amavis[30696]: (30696-10) Passed CLEAN, LOCAL [192.168.10.2] [192.168.10.2] <lucasmoreira@construtormodelo.com.br> -> <lucaspfmoreira@gmail.com>, Message-ID: <4ACC8B8E.8090203@construtormodelo.com.br>, mail_id: eRn9npw-c2Uf, Hits: -1.407, size: 570, queued_as: 0625D1230002, 7950 ms
Oct  7 09:28:17 mail postfix/smtp[17823]: 079AE1230001: to=<lucaspfmoreira@gmail.com>, relay=127.0.0.1[127.0.0.1]:10024, delay=8.1, delays=0.11/0/0.01/7.9, dsn=2.0.0, status=sent (250 2.0.0 Ok, id=30696-10, from MTA([127.0.0.1]:10025): 250 2.0.0 Ok: queued as 0625D1230002)
Oct  7 09:28:17 mail postfix/qmgr[644]: 079AE1230001: removed
Oct  7 09:28:17 mail postfix/smtp[17834]: 0625D1230002: to=<lucaspfmoreira@gmail.com>, relay=smtp.construtoramodelo.com.br[200.234.205.213]:25, delay=0.21, delays=0.02/0.04/0.13/0.02, dsn=5.0.0, status=bounced (host smtp.construtoramodelo.com.br[200.234.205.213] said: 553 O ENDERECO DE E-MAIL UTILIZADO PARA ENVIAR MENSAGENS NAO E O MESMO QUE SE AUTENTICOU NA SUA CONTA/THE E-MAIL ADDRESS USED TO SEND MESSAGES IS NOT THE SAME AS THE ADDRESS THAT YOU AUTHENTICATED WITH (#5.7.1) (in reply to MAIL FROM command))
Oct  7 09:28:17 mail postfix/cleanup[17822]: 46CB91230001: message-id=<20091007122817.46CB91230001@mail.modelo.local>
Oct  7 09:28:17 mail postfix/qmgr[644]: 46CB91230001: from=<>, size=3506, nrcpt=1 (queue active)
Oct  7 09:28:17 mail postfix/bounce[18646]: 0625D1230002: sender non-delivery notification: 46CB91230001
Oct  7 09:28:17 mail postfix/qmgr[644]: 0625D1230002: removed
Oct  7 09:28:17 mail postfix/smtp[17834]: 46CB91230001: to=<lucasmoreira@construtormodelo.com.br>, relay=smtp.construtoramodelo.com.br[200.234.205.213]:25, delay=0.29, delays=0.03/0.01/0.13/0.12, dsn=2.0.0, status=sent (250 ok 1254919077 qp 14226)
Oct  7 09:28:17 mail postfix/qmgr[644]: 46CB91230001: removed
Please help, I don't have Outlook licences for all uses and I don't wanna pay for it, besides Thunderbird is a great free client.

Tanks a lot