email que rebotan en yahoo

continuo con este problema alguien sabe a que se debe

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id 1Pz9JX-0005Ba-EO; Mon, 14 Mar 2011 10:04:26 -0500
From: "Raymundo Gomez" <ray@comproexpress.com>
To: <gtejeira66@yahoo.com>
Cc: <gta@cableonda.net>
Subject: Envio de Mail masivos Comproexpress/Cargoxpress Logistic
Date: Mon, 14 Mar 2011 10:04:02 -0500
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