{"id":19930,"date":"2020-09-24T15:37:25","date_gmt":"2020-09-24T13:37:25","guid":{"rendered":"https:\/\/test-blog.mailfence.com\/?p=19930"},"modified":"2024-11-14T10:54:26","modified_gmt":"2024-11-14T09:54:26","slug":"estrategia-de-implementacion-de-dmarc-de-mailfence","status":"publish","type":"post","link":"https:\/\/blog.mailfence.com\/es\/estrategia-de-implementacion-de-dmarc-de-mailfence\/","title":{"rendered":"Estrategia de implementaci\u00f3n de DMARC de Mailfence"},"content":{"rendered":"\n
\"Pol\u00edtica<\/figure>\n\n\n\n


Hemos tomado una serie de medidas para proteger a nuestros usuarios de ataques comunes, como \u00abspoofing\u00bb o \u00abphishing<\/a>\u00ab. Sin embargo, estos correos electr\u00f3nicos a\u00fan podr\u00edan llegar a su bandeja de entrada. Si bien hemos implementado protecciones convencionale<\/a>s y otras<\/a> medidas<\/a>, a veces no resultan suficientes. Por tanto, hemos decidido implementar la pol\u00edtica de remitentes DMARC. Encontrar\u00e1 m\u00e1s informaci\u00f3n acerca de la estrategia de implementaci\u00f3n de DMARC de Mailfence a continuaci\u00f3n.<\/p>\n\n\n\n

\u00bfQu\u00e9 es DMARC?<\/h2>\n\n\n\n

DMARC significa \u00abAutentificaci\u00f3n, Comunicaci\u00f3n y Conformidad de Mensajes en base al Dominio\u00bb (las siglas DMARC corresponden al nombre en ingl\u00e9s: Domain-based Message Authentication, Reporting and Conformance). Les permite a los remitentes definir una pol\u00edtica para sus respectivos dominios acerca qu\u00e9 debe hacer el receptor cuando ocurra un error con el SPF y\/o el DKIM. DMARC tambi\u00e9n verifica si el encabezado del mensaje Header-FROM<\/code> est\u00e1 alineado<\/a> con las comprobaciones de SPF y DKIM. Los propietarios de los dominios tambi\u00e9n pueden recibir informes conjuntos o forenses del servicio de recepci\u00f3n, que listan un resumen de resultados de DMARC para su dominio. Esto les permite a los propietarios de los dominios hacer los cambios necesarios para dejar pasar a los remitentes leg\u00edtimos o ver de d\u00f3nde pueden provenir los correos electr\u00f3nicos malintencionados.<\/p>\n\n\n\n

Si fallan las comprobaciones de DMARC, bas\u00e1ndose en la pol\u00edtica del dominio remitente, el mensaje se pone en cuarentena en su carpeta de correo no deseado o se rechaza directamente. Cuando se implementa DMARC desde el lado del receptor, los usuarios quedan protegidos del phishing, spoofing y otras clases de correos electr\u00f3nicos no deseados.<\/p>\n\n\n\n

Ahora Mailfence implementa la pol\u00edtica DMARC de remitentes<\/strong><\/h2>\n\n\n\n

Para garantizar que los usuarios de Mailfence tambi\u00e9n puedan percibir, entre otros, los beneficios de anti-suplantaci\u00f3n de identidad y anti-phishing de DMARC, hemos decidido comenzar a implementar la pol\u00edtica de remitentes DMARC.<\/p>\n\n\n\n

\u00bfPor qu\u00e9 Mailfence no implement\u00f3 DMARC anteriormente?<\/h3>\n\n\n\n

Existen diversas razones. En primer lugar, la adopci\u00f3n de la pol\u00edtica DMARC (junto con las comprobaciones de SPF y DKIM) resultaba lenta. En segundo lugar, una gran cantidad de dominios optaron por la modalidad de monitorizaci\u00f3n (p=none) y no implementaron una pol\u00edtica de DMAR accionable. En tercer lugar, para evitar que correos electr\u00f3nicos leg\u00edtimos no logre superar lo establecido en DMARC debido a errores de implementaci\u00f3n del lado del remitente o cuando vengan de una lista de correos electr\u00f3nicos.<\/p>\n\n\n\n

\u00bfQu\u00e9 ocurrir\u00e1 exactamente a los correos electr\u00f3nicos que recibo?<\/h4>\n\n\n\n

Si fallan las comprobaciones de DMARC, el correo electr\u00f3nico se colocar\u00e1 en su carpeta de correo no deseado. Actualmente no rechazamos correos electr\u00f3nicos que no hayan superado DMARC si la pol\u00edtica del dominio remitente resulta rechazada. Esto para compensar posibles errores de implementaci\u00f3n (del lado del remitente).
Esto cambiar\u00e1 una vez que tengamos suficientes remitentes sin fallos en DMARC debido a errores de implementaci\u00f3n.<\/p>\n\n\n\n

\u00bfY si incluyo la direcci\u00f3n de un remitente en mi \u00ablista blanca\u00bb?<\/h4>\n\n\n\n

El correo electr\u00f3nico que no haya superado DMARC de la direcci\u00f3n de remitente en la lista blanca llegar\u00e1 a su bandeja de entrada. Tenga presente el posible riesgo de recibir correos electr\u00f3nicos maliciosos que no hayan superado el DMARC directamente en su bandeja de entrada<\/strong>.<\/p>\n\n\n\n

La pol\u00edtica de DMARC de Mailfence<\/h2>\n\n\n\n

Mailfence ha definido su propia pol\u00edtica de DMARC como \u00abcuarentena\u00bb. Esto implica que, si fallan las comprobaciones de DMARC, los servidores de correo electr\u00f3nico en el lado del destinatario deben poner el correo electr\u00f3nico en la carpeta de correo no deseado del destinatario. Esto reduce el phisihing, el spoofing y otros ataques de suplantaci\u00f3n de identidad. De manera similar, tambi\u00e9n contribuye a mantener la reputaci\u00f3n de nuestro nombre de dominio.<\/p>\n\n\n\n

Podr\u00edamos haber configurado la pol\u00edtica como simplemente \u00abRechazar\u00bb. Sin embargo, esto podr\u00eda impactar negativamente a la entrega de correos electr\u00f3nicos leg\u00edtimos. Por ejemplo, un mensaje podr\u00eda fallar la DMARC si se env\u00eda a una lista de correo que reenv\u00eda el mensaje a todos los participantes. Esto podr\u00eda cambiar a futuro, con la adopci\u00f3n de la compatibilidad con DMARC y DKIM, junto con ARC<\/a>.<\/p>\n\n\n\n

Tambi\u00e9n exhortamos a los propietarios de dominios personalizados<\/a> a que definan la pol\u00edtica de DMARC para sus dominios<\/p>\n\n\n\n

No dude en compartirnos sus comentarios y en reportar cualquier problema relacionado con la estrategia de implementaci\u00f3n de DMARC en Mailfence.<\/p>\n\n\n\n

Le damos las gracias por su apoyo.<\/p>\n\n\n\n

S\u00edganos en twitter\/<\/a>reddit<\/a> y mant\u00e9ngase actualizado en todo momento. <\/p>\n\n\n\n

\u2013 El Equipo Mailfence<\/p>\n","protected":false},"excerpt":{"rendered":"

Hemos tomado una serie de medidas para proteger a nuestros usuarios de ataques comunes, como \u00abspoofing\u00bb o \u00abphishing\u00ab. Sin embargo, estos correos electr\u00f3nicos a\u00fan podr\u00edan llegar a su bandeja de entrada. Si bien hemos implementado protecciones convencionales y otras medidas, a veces no resultan suficientes. Por tanto, hemos decidido implementar la pol\u00edtica de remitentes DMARC. 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