Problemas de recepción en Hotmail y Yahoo
Algunos clientes, especialmente en América, nos han comunicado que tienen problemas para enviar correos a hotmail.com. Tras descartar que se trate de un problema en los servidores de Dimensis, se ha contactado con hotmail y parece ser que se trata de un problema con el filtro antispam de la compañía. Los mensajes salen del servidor de Dimensis, pero quedan en cola de envíos pendientes de procesamiento cuando llegan a Hotmail. Una vez allí no son procesados, y el sistema tampoco envía ningún correo de advertencia al remitente.
Hemos observado que el problema se repite sólo en algunos servidores de correo de la red de hotmail.com, aunque no en todos.
Gracias al Bruno Touleau (Web Gear International) hemos obtenido la siguiente respuesta por parte de Hotmail:
We received your message at randomtestacct@hotmail.com
Hotmail uses two spam filtering technologies. We use the Brightmail system and we use our own SmartScreen filters. I can’t speak to Brightmail’s filtering technology as they are a totally separate company but I can talk a little bit about SmartScreen. SmartScreen is built around the technology of machine learning. SmartScreen’s filters are trained to recognize what is spam and what isn’t spam. In short, we filter incoming emails that look like spam. I am not able to go into any specific details about what these filters specifically entail, as this would render them useless.
We also base our spam rating on the reputation of the sender. One way to positively impact the reputation of your IP is to obtain SPF/Sender ID records. We recommend that you have SPF/Sender ID records in place for all domains sending using the your IP 213.195.72.36.
While you have valid SPF/Sender ID records published for your domain (webgearinternational.com) and your domain has been added to the Sender ID database. This may take up to 2 business days to be fully replicated in the DNS and our systems. The email headers in the sample message that you sent indicate that your information has not been fully replicated in our systems, yet.