[postfix-es] No puedo enviar correos a un dominio

[Pain martinez]

No puedo enviar correos a un dominio, segun me dicen en sus registros ni siquiera figura como que haya enviado algo desde mi servidor, ya he chequeado en las black list y mi servidor no aparece en ninguna

This is the mail system at host xxxx.com

I'm sorry to have to inform you that your message could not
be delivered to one or more recipients. It's attached below.

For further assistance, please send mail to postmaster.

If you do so, please include this problem report. You can
delete your own text from the attached returned message.

                   The mail system

<xxx en yyy>: host smtp.xxx.xx[#########] said: 554 Transaction
    Failed Spam Message not queued. (in reply to end of DATA command)

--
Reporting-MTA: dns; xxxxxxx
X-Postfix-Queue-ID: 32A6355D05
X-Postfix-Sender: rfc822; xxxx en zzzz
Arrival-Date: Mon, 13 Aug 2012 11:19:35 -0300 (UYT)

Final-Recipient: rfc822; xxxx en yyy
Original-Recipient: rfc822;xxx en yyy
Action: failed
Status: 5.0.0
Remote-MTA: dns; smtp.xxx.xx
Diagnostic-Code: smtp; 554 Transaction Failed Spam Message not queued.


 		 	   		  
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