Recurro a la amplia experiencia de los expertos de este foro

Les envio el encabezado completo de un mail que me llegó y que generó un
acuse de recibo automatico sin mi consentimiento cuando lo lei desde el
correo web de hotmail . (ni siquiera lo leí desde OExpress en donde tengo
deshabilitada la opcion de confirmacion de lectura)

En este sentido, podrian decirme que sistema, metodo, servicio o aplicacion
utilizó el emisor para generar automaticamente un acuse de recibo ?

Mil gracias.

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