Failed mail

[kurgans]

Hello everybody,

Anyone can help me a little, no where to look because it can cause this error

Thank you


De: MAILER-DAEMON@www.dominio.com.local (Mail Delivery System)
> Fecha: 6 de mayo de 2009 12:48:13 GMT+02:00
> Para: sistemas@dominio.tld
> Asunto: Undelivered Mail Returned to Sender
>
>
> This is the mail system at host http://www.dominio.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
>
> <tere_masdeu@ispcp-arpl.dominio.tld>: Command died with status 1:
> "/var/www/ispcp/engine/messager/ispcp-arpl-msgr"
>
> <tere_masdeu@ispcp-arpl.dominio.tld> (expanded from <tere_masdeu@dominio.tld>):
> Command died with status 1:
> "/var/www/ispcp/engine/messager/ispcp-arpl-msgr"
> Reporting-MTA: dns; http://www.dominio.com
> X-Postfix-Queue-ID: 7DBD5E50C4
> X-Postfix-Sender: rfc822; sistemas@dominio.tld
> Arrival-Date: Wed, 6 May 2009 12:47:55 +0200 (CEST)
>
> Final-Recipient: rfc822; tere_masdeu@ispcp-arpl.dominio.tld
> Original-Recipient: rfc822;tere_masdeu@ispcp-arpl.dominio.tld
> Action: failed
> Status: 5.3.0
> Diagnostic-Code: x-unix; unknown mail system error 1
>
> Final-Recipient: rfc822; tere_masdeu@ispcp-arpl.dominio.tld
> Original-Recipient: rfc822;tere_masdeu@dominio.tld
> Action: failed
> Status: 5.3.0
> Diagnostic-Code: x-unix; unknown mail system error 1
>
> De: Roberto Municio García <sistemas@dominio.tld>
>
> Fecha: 6 de mayo de 2009 12:44:24 GMT+02:00
>
> Para: "Tere Masdeu (Tere Masdeu)" <tere_masdeu@dominio.tld>