All� que d�iem del HotMail... El correu original porta adjunt un document de Word que com que ocupava 171 KB per les imatges doncs adjunto nom�s el text.
A la part final del correu hi ha la font original del missatge. Salutacions, -- [ name ] [ Jordi Falc�s i Valls ] [ nick ] [ Jol ] [ e-mail ] [ [EMAIL PROTECTED] ] [ web ] [ http://www.falces.net/ ] [ phone ] [ +34 937.25.33.58 ] [ fax ] [ +34 937.25.91.58 ] [ mobile ] [ +34 687.97.39.77 ] �.�.�.�.�.�.�.�.�.�.�.�.�.�.�.�.�.�. Por muy r�pido que viaje la luz �sta siempre se da cuenta que la oscuridad ha llegado antes �.�.�.�.�.�.�.�.�.�.�.�.�.�.�.�.�.�. ---------- Inici SmartScreenSpamFilterAB.doc ---------- How the Microsoft SmartScreen Technology Spam Filter Works The spam filter SmartScreen Technology, developed by Microsoft Research, is based on patented machine learning technology in which the spam filters employed in Microsoft� products such as the Office Outlook� 2003 Junk E-Mail Filter can learn the definitions that distinguish good mail from spam. After inspecting an incoming message, the filter can then decide whether the message is likely to be spam based on the probability determined by the learning process. To educate the filter, hundreds of thousands of Hotmail� users have agreed to participate in the Feedback Loop program. These users classify an e-mail message sent to them via Hotmail each day as either spam or good mail. The messages are then sent back to Microsoft, where the SmartScreen machine learning technology investigates each message, and teaches the filter what types of characteristics or indicators make the message likely to be spam or good mail. To date, more than 5 million e-mail messages have been used to define the criteria used by the filter. With such massive training on what markers to look for in a message, SmartScreen is able to make a very accurate assessment of the probability that an incoming e-mail message is spam. SmartScreen Technology is trained on a statistically sound sample of e-mail that includes good e-mail in addition to spam. The fact that SmartScreen has learned the markers for both types of mail increases the overall accuracy and reduces the likelihood of false positives. This accuracy is one of the key advantages of Microsoft�s advanced technology and filters. Microsoft�s spam fighting community submits millions of good and spam e-mail messages to Microsoft for processing. The filter is then trained to understand the differences between and markers associated with good e-mail and spam. SmartScreen is used in Microsoft mail products such as Office Outlook 2003 Junk E-Mail Filter to inspect messages for characteristics of spam or good e-mail and filter accordingly. When a Microsoft mail product receives an e-mail message, the application first obtains the properties of the message and determines if the content should be scanned by the filter. If the message contains an address or domain on the Safe Sender, Safe Recipient or Blocked Sender lists, the appropriate rule is applied and SmartScreen is bypassed. However, if the message is not on any of the lists, the message is submitted for filtering. As the message is processed by the filter, the different characteristics (typically contained within the message text) are noted and the probability that each characteristic is spam (or good e-mail) is used to generate an overall rating. Based on the setting in the product that uses SmartScreen, the message, if determined to be spam, will automatically be sent to the designated spam folder. ######### Microsoft, Outlook and Hotmail are either registered trademarks or trademarks of Microsoft Corp. in the United States and/or other countries. For more information, press only: Rapid Response Team, Waggener Edstrom, (503) 443-7070, [EMAIL PROTECTED] ---------- Final SmartScreenSpamFilterAB.doc ---------- -----Mensaje original----- De: Foro sobre el Abuso en el Correo Electr�nico (ACE) [mailto:[EMAIL PROTECTED] En nombre de Jesus Sanz de las Heras Enviado el: lunes, 12 de enero de 2004 11:01 Para: [EMAIL PROTECTED] Asunto: Re: [ACE] Hotmail Hola Ernesto dijo: > �Alguien sabe que t�cnica est� usando Hotmail contra el spam entrante? > En la cuenta que tengo all� el spam recibido se ha reducido en m�s de un > 95% en las �ltimas semanas.... No soy usuario de Hotmail, pero por lo que se Hotmail (Microsoft) siempre han estado usando alg�n tipo de paquete de filtros de contenidos en su servidor creo que se llama/ba "BrighMail" http://www.brightmail.com/press/2003_MIT_Spam_Conference/. Como todos van evolucionando a t�cnicas de control con filtros bayesianos y ha desarrollado una cosa que se llama "SmartScreen Technology" que va a aprendiendo lo que es o no es spam seg�n el usuario. Parece que lo han probado en hotmail e incorporado en Outlook. Algo muy parecido a lo que hace Mozilla 1.5 con su boton "junk mail" y que funciona extraordinar�amente. Adjunto un peque�o documento al respecto. Esto es lo que s�. De todos modos personalmente lo que mas me interesa no son los filtros de contenidos sino las t�cnicas paa evitar que el spam entre en el MTA como SPF etc. Es un sinsentido usar enormes recursos para aceptar un mensaje para que acabe en la basura. SALUDos -- Jes�s Sanz de las Heras E-mail: [EMAIL PROTECTED] RedIRIS/CSIC Tel: +34 91 585 51 38 Serrano 142 Fax: +34 91 585 51 46 E-28006 Madrid SPAIN Coordinador Servicio correo electr�nico de RedIRIS Coordinador Servicio de RedIRIS a Redes Tem�ticas - Red Academica y Cient�fica espa�ola (http://www.rediris.es/) - ---------------------------------------------------- Archivos de ACE-L: http://listserv.rediris.es/archives/ace-l.html ------------------------------------------------------ _______________________________________________ llista de correu de l'Internauta [EMAIL PROTECTED] http://zeus.internauta.net/mailman/listinfo/internauta
