Salian correos con un usuario en particular, si me fijo en el encabezado dice que usa como useragent a squirrelmail user credondo. Mi pregunta es: si no hay open relay, y en main.cf mydestination esta de esta forma: mydestination = $mydomain, myhostname , localhost .. la opcion mynetworks = 192.168.0.0 ,127.0.0.1 como se entiende que salgan correos con dominio que no sean el propio? Aqui les dejo parte del log de postfix y el mail de la lista negra que me mando avisandome en ese orden. La manera en que lo solucioné de momento es cambiando la contraseñan de correo, asi no puede enviar correo ni con el webmail, ni autorizando con sasl, ya que me olvide de decirles que el usuario está fuera de mi lan , asi que le habia habilitado una cuenta con sasl2
Desde ya muchas gracias



Mail de lista negra.

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The nature of this spam indicates possible fraud. Pay close attention to both the from address 
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* Date:    Wed, 22 Oct 2008 17:12:05 -0700
* From:    "THE CASINO-WEB LOTTERY AWARD" <[EMAIL PROTECTED]>
* Subject: Dear Lottery Winner,
* Host:    mail.royalmercosur.com [201.251.7.126]
* Reason:  419scam Freemail - Reply-to does not match From - [EMAIL PROTECTED] F="THE 
CASINO-WEB LOTTERY AWARD" <[EMAIL PROTECTED]> - X=pascal H=mail.royalmercosur.com 
[201.251.7.126] HELO=[mail.royalmercosur.com] [EMAIL PROTECTED] T=[acordov

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======== Original Headers ========

Delivery-date: Wed, 22 Oct 2008 17:12:05 -0700
Received: from mail.royalmercosur.com ([201.251.7.126])
        by pascal.junkemailfilter.com with esmtp (Exim 4.68)
        id 1Ksno4-0007zw-JQ on interface=65.49.42.60
        for [EMAIL PROTECTED]; Wed, 22 Oct 2008 17:12:05 -0700
Received: from localhost (localhost [127.0.0.1])
        by mail.royalmercosur.com (Postfix) with ESMTP id 09E9A8C304;
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Received: from mail.royalmercosur.com ([127.0.0.1])
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Received: from 81.199.88.72
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Message-ID: <[EMAIL PROTECTED]>
Date: Wed, 22 Oct 2008 15:44:23 -0300 (ART)
Subject: Dear Lottery Winner,
From: "THE CASINO-WEB LOTTERY AWARD" <[EMAIL PROTECTED]>
Reply-To: [EMAIL PROTECTED]
User-Agent: SquirrelMail/1.4.9a
MIME-Version: 1.0
Content-Type: text/plain;charset=iso-8859-1
X-Priority: 3 (Normal)
Importance: Normal
To: undisclosed-recipients:;
Content-Transfer-Encoding: quoted-printable
X-Sender-Domain: royalmercosur.com
X-Freemail-From: casino.com
X-Freemail-Reply-to: hotmail.com
X-Spamfilter-host: pascal.junkemailfilter.com - http://www.junkemailfilter.com
X-Mail-from: [EMAIL PROTECTED]
X-From-name-part: the casino-web lottery award X-Spam-Class: SPAM-HIGH-VERY - 419scam Freemail - Reply-to does not match From - [EMAIL PROTECTED] F="THE CASINO-WEB LOTTERY AWARD" <[EMAIL PROTECTED]> - X=pascal H=mail.royalmercosur.com [201.251.7.126] HELO=[mail.royalmercosur.com] [EMAIL PROTECTED] [EMAIL PROTECTED] S=[Dear Lottery Winner,] FN=[the casino-web lottery award ]
X-Spamsave: Yes - 419scam Freemail - Reply-to does not match From - [EMAIL PROTECTED] 
F="THE CASINO-WEB LOTTERY AWARD" <[EMAIL PROTECTED]> - X=pascal 
H=mail.royalmercosur.com [201.251.7.126] HELO=[mail.royalmercosur.com] [EMAIL PROTECTED] [EMAIL 
PROTECTED] S=[Dear Lottery Winner,] FN=[the casino-web lottery award ]
X-Sender-Host-Address: 201.251.7.126
X-Sender-Host-Name: mail.royalmercosur.com
X-Original-helo: mail.royalmercosur.com

------------------------------------------------------------------------

Feedback-Type: abuse
User-Agent: JunkEmailFilter - Abuse Reporter/1.0 - Testing - Feedback 
Appreciated
Version: 0.1
Original-Mail-From: "THE CASINO-WEB LOTTERY AWARD" <[EMAIL PROTECTED]>
Original-Rcpt-To: undisclosed-recipients:;
Received-Date: Wed, 22 Oct 2008 17:12:05 -0700
Source-IP: 201.251.7.126


------------------------------------------------------------------------

Asunto:
Dear Lottery Winner,
De:
"THE CASINO-WEB LOTTERY AWARD" <[EMAIL PROTECTED]>
Fecha:
Wed, 22 Oct 2008 15:44:23 -0300 (ART)

Para:
undisclosed-recipients:;

Delivery-date:
Wed, 22 Oct 2008 17:12:05 -0700
Received:
from mail.royalmercosur.com ([201.251.7.126]) by pascal.junkemailfilter.com with esmtp (Exim 4.68) id 1Ksno4-0007zw-JQ on interface=65.49.42.60 for [EMAIL PROTECTED]; Wed, 22 Oct 2008 17:12:05 -0700
Received:
from localhost (localhost [127.0.0.1]) by mail.royalmercosur.com (Postfix) with ESMTP id 09E9A8C304; Wed, 22 Oct 2008 15:44:25 -0300 (ART)
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Received:
from mail.royalmercosur.com ([127.0.0.1]) by localhost (mail.royalmercosur.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 7+tKuGv-tLND; Wed, 22 Oct 2008 15:44:24 -0300 (ART)
Received:
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Received:
from 81.199.88.72 (SquirrelMail authenticated user credondo) by mail.royalmercosur.com with HTTP; Wed, 22 Oct 2008 15:44:23 -0300 (ART)
Message-ID:
<[EMAIL PROTECTED]>
Responder a:
[EMAIL PROTECTED]
Agente de usuario::
SquirrelMail/1.4.9a
MIME-Version:
1.0
Content-Type:
text/plain;charset=iso-8859-1
X-Priority:
3 (Normal)
Importance:
Normal
Content-Transfer-Encoding:
quoted-printable
X-Sender-Domain:
royalmercosur.com
X-Freemail-From:
casino.com
X-Freemail-Reply-to:
hotmail.com
X-Spamfilter-host:
pascal.junkemailfilter.com - http://www.junkemailfilter.com
X-Mail-from:
[EMAIL PROTECTED]
X-From-name-part:
the casino-web lottery award
X-Spam-Class:
SPAM-HIGH-VERY - 419scam Freemail - Reply-to does not match From - [EMAIL PROTECTED] F="THE CASINO-WEB LOTTERY AWARD" <[EMAIL PROTECTED]> - X=pascal H=mail.royalmercosur.com [201.251.7.126] HELO=[mail.royalmercosur.com] [EMAIL PROTECTED] [EMAIL PROTECTED] S=[Dear Lottery Winner,] FN=[the casino-web lottery award ]
X-Spamsave:
Yes - 419scam Freemail - Reply-to does not match From - [EMAIL PROTECTED] F="THE CASINO-WEB LOTTERY AWARD" <[EMAIL PROTECTED]> - X=pascal H=mail.royalmercosur.com [201.251.7.126] HELO=[mail.royalmercosur.com] [EMAIL PROTECTED] [EMAIL PROTECTED] S=[Dear Lottery Winner,] FN=[the casino-web lottery award ]
X-Sender-Host-Address:
201.251.7.126
X-Sender-Host-Name:
mail.royalmercosur.com
X-Original-helo:
mail.royalmercosur.com


from=<[EMAIL PROTECTED]>, size=2711, nrcpt=50 (queue active)
Oct 23 09:02:36 localhost postfix/qmgr[13699]: 324259209E: from=<[EMAIL PROTECTED]>, size=2711, nrcpt=50 (queue active) Oct 23 09:02:36 localhost postfix/smtp[13709]: connect to cluster2.eu.messagelabs.com[195.245.231.83]: Connection refused (port 25) Oct 23 09:02:36 localhost postfix/qmgr[13699]: 11FC62C6FD: from=<>, size=8265, nrcpt=1 (queue active) Oct 23 09:02:36 localhost postfix/smtp[13714]: connect to cluster2.eu.messagelabs.com[195.245.231.67]: Connection refused (port 25) Oct 23 09:02:36 localhost postfix/smtp[13708]: connect to cluster2.eu.messagelabs.com[193.109.255.131]: Connection refused (port 25) Oct 23 09:02:36 localhost postfix/qmgr[13699]: DB15DD186: from=<>, size=5438, nrcpt=1 (queue active) Oct 23 09:02:36 localhost postfix/smtp[13710]: connect to cluster2.eu.messagelabs.com[195.245.230.179]: Connection refused (port 25) Oct 23 09:02:36 localhost postfix/qmgr[13699]: 1D6398B789: from=<>, size=4385, nrcpt=1 (queue active) Oct 23 09:02:36 localhost postfix/qmgr[13699]: 60CF52D600: from=<[EMAIL PROTECTED]>, size=2108, nrcpt=50 (queue active) Oct 23 09:02:36 localhost postfix/qmgr[13699]: 194248D2A7: from=<>, size=27838, nrcpt=1 (queue active) Oct 23 09:02:36 localhost postfix/qmgr[13699]: 3835AC379: from=<>, size=9172, nrcpt=1 (queue active) Oct 23 09:02:36 localhost postfix/qmgr[13699]: 1597E8B342: from=<>, size=14778,

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