{"id":8101,"date":"2024-02-10T13:06:45","date_gmt":"2024-02-10T16:06:45","guid":{"rendered":"https:\/\/redhustle.com\/blog\/?p=8101"},"modified":"2024-02-14T17:15:02","modified_gmt":"2024-02-14T20:15:02","slug":"dmarc-que-es-configuracion-obligatorio-etiquetas","status":"publish","type":"post","link":"https:\/\/redhustle.com\/blog\/dmarc-que-es-configuracion-obligatorio-etiquetas\/","title":{"rendered":"\u00bfQu\u00e9 es DMARC? Configuraci\u00f3n, obligatoriedad y etiquetas"},"content":{"rendered":"\n<p>El correo electr\u00f3nico es una herramienta fundamental para la comunicaci\u00f3n, especialmente profesional. Sin embargo, su naturaleza abierta lo convierte en un blanco para <strong>ataques maliciosos como el phishing y el spoofing<\/strong>. Aqu\u00ed es donde entra en juego <strong>DMARC<\/strong> que significa, por sus siglas en ingl\u00e9s, \u00ab<em>Domain-based Message Authentication, Reporting, and Conformance<\/em>\u00ab, o en espa\u00f1ol, \u00ab<em>Autenticaci\u00f3n de mensajes, informes y conformidad basada en el dominio<\/em>\u00ab.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u00bfQu\u00e9 es DMARC?<\/h2>\n\n\n\n<p>Aunque la sigla puede sonar compleja, su funci\u00f3n es crucial y simple conceptualmente. DMARC combina las comprobaciones de DKIM (DomainKeys Identified Mail) y SPF (Sender Policy Framework) para validar los correos electr\u00f3nicos entrantes. <\/p>\n\n\n\n<p>Si alguna vez utilizaste una plataforma de email marketing como MailChimp, Doppler o similares seguro habr\u00e1s tenido que configurar en el DNS de tu dominio los protocolos DKIM y SPF. Lo que hace DMARC es decirle a tu servidor, que deber\u00eda hacer con un correo que falle la comprobaci\u00f3n DKIM y \/ o SPF. Adem\u00e1s te env\u00eda, al correo que configures, un reporte de los emails que pasan y los que no.<\/p>\n\n\n\n<p>De esta forma podr\u00e1s evitar que alguien reciba un email bajo tu dominio que no sea oficial y saber cuando eso se intent\u00f3 para tomar medidas al respecto. <\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><a href=\"https:\/\/redhustle.com\/blog\/wp-content\/uploads\/2024\/02\/img-interna.jpg\"><img fetchpriority=\"high\" decoding=\"async\" width=\"1024\" height=\"301\" src=\"https:\/\/redhustle.com\/blog\/wp-content\/uploads\/2024\/02\/img-interna-1024x301.jpg\" alt=\"Ciber seguridad vinculada a correos electr\u00f3nicos con DKIM, SPF y DMARC\" class=\"wp-image-8105\" srcset=\"https:\/\/redhustle.com\/blog\/wp-content\/uploads\/2024\/02\/img-interna-1024x301.jpg 1024w, https:\/\/redhustle.com\/blog\/wp-content\/uploads\/2024\/02\/img-interna-300x88.jpg 300w, https:\/\/redhustle.com\/blog\/wp-content\/uploads\/2024\/02\/img-interna-768x226.jpg 768w, https:\/\/redhustle.com\/blog\/wp-content\/uploads\/2024\/02\/img-interna-1536x452.jpg 1536w, https:\/\/redhustle.com\/blog\/wp-content\/uploads\/2024\/02\/img-interna.jpg 1920w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/a><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">\u00bfCu\u00e1les son sus etiquetas y para qu\u00e9 sirven?<\/h2>\n\n\n\n<p>DMARC utiliza varias etiquetas para configurar y controlar su funcionamiento. Las etiquetas m\u00e1s importantes son:<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Etiqueta p=<\/h3>\n\n\n\n<p>Esta etiqueta especifica la pol\u00edtica de DMARC que el remitente quiere aplicar. Puede ser \u00abnone\u00bb (ninguna acci\u00f3n), \u00abquarantine\u00bb (colocar en cuarentena) o \u00abreject\u00bb (rechazar). <\/p>\n\n\n\n<p>La opci\u00f3n \u00abquarantine\u00bb suele ser la m\u00e1s recomendada para iniciar, ya que si hay alguna configuraci\u00f3n errada en los registros DKIM o SPF te dar\u00e1 la oportunidad de solucionarlo sin rechazar esos correos. Una vez que todos tus emails pasen el protocolo DMARC satisfactoriamente, pod\u00e9s modificar el registro y utilizar \u00abreject\u00bb.<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>p=quarantine;<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\">Etiqueta sp=<\/h3>\n\n\n\n<p>Permite asignarle a los subdominios una pol\u00edtica \u00abp\u00bb diferente. Es opcional y si no se configura, por defecto se asignar\u00e1 a dominio y subdominios la misma pol\u00edtica (ej. \u00abquarantine\u00bb).<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Etiquetas rua= y ruf=<\/h3>\n\n\n\n<p>Son dos tipos de informes y all\u00ed deber\u00edas colocar el correo al que quieras que se env\u00eden. Puede ser al mismo email o a dos diferentes. Entonces esta etiqueta quedar\u00eda as\u00ed: <\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>rua=mailto:<mark style=\"background-color:#fcb900\" class=\"has-inline-color\">tumail@tudominio.com<\/mark>; ruf=mailto:<mark style=\"background-color:#fcb900\" class=\"has-inline-color\">tumail@tudominio.com<\/mark>;<\/code><\/pre>\n\n\n\n<h4 class=\"wp-block-heading\">RUF (Reporting URI for Forensics):<\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Los informes RUF muestran el detalle de los correos electr\u00f3nicos individuales que no cumplen al 100% con DMARC.<\/li>\n\n\n\n<li>Contienen detalles forenses sobre los correos electr\u00f3nicos que fallaron las comprobaciones de autenticaci\u00f3n (DKIM o SPF).<\/li>\n\n\n\n<li>Son valiosos para detectar vulnerabilidades e intentos no autorizados de env\u00edo de correos electr\u00f3nicos.<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\">RUA (Reporting URI for Aggregate):<\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Por otro lado, RUA ofrece una vista general de todo el tr\u00e1fico de correo electr\u00f3nico de un dominio.<\/li>\n\n\n\n<li>Brindan estad\u00edsticas agregadas sobre c\u00f3mo se procesaron los correos electr\u00f3nicos seg\u00fan las pol\u00edticas DMARC.<\/li>\n\n\n\n<li>Son fundamentales para monitorear la implementaci\u00f3n de DMARC y evaluar su efectividad.<\/li>\n<\/ul>\n\n\n\n<p>En resumen, RUF se centra en correos electr\u00f3nicos individuales y RUA en una visi\u00f3n general de todo el tr\u00e1fico de correo electr\u00f3nico. Recomendamos al menos configurar RUA en tu registro DMARC.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Etiquetas aspf= y adkim=<\/h3>\n\n\n\n<p>Ambos se pueden configurar en estricto (s) o relajado (r). Son opcionales y por defecto la etiqueta ser\u00e1 \u00abrelaxed\u00bb.<\/p>\n\n\n\n<p>ASPF refiere a la alineaci\u00f3n entre el dominio del remitente y el dominio del encabezado \u201cFrom:\u201d mientras que ADKIM a la alineaci\u00f3n entre el dominio del remitente y la firma DKIM.<\/p>\n\n\n\n<p>Al igual que con la etiqueta \u00abp\u00bb, en este caso recomendamos dejar al principio la opci\u00f3n por defecto (relajado) y si estamos seguros de que no tendremos problemas con nuestros correos leg\u00edtimos, pasarlo a <em>strict <\/em>(estricto).<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Etiqueta ri=<\/h3>\n\n\n\n<p>Esta etiqueta DMARC indica el per\u00edodo de tiempo entre informes enviados expresado en segundos. Por ejemplo, cada un d\u00eda ser\u00eda 86400 (segundos).<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>ri=86400; <\/code><\/pre>\n\n\n\n<h2 class=\"wp-block-heading\">\u00bfC\u00f3mo quedar\u00eda mi registro DMARC completo?<\/h2>\n\n\n\n<p>Primero es necesario verificar que tengas correctamente configurados los registros DNS para SPF y DKIM. Luego te recomendamos crear un primer registro flexible de la siguiente forma:<\/p>\n\n\n\n<p>Nuevo registro DNS de tipo TXT bajo el nombre <strong>_dmarc.<mark style=\"background-color:#fcb900\" class=\"has-inline-color\">tudominio.com<\/mark><\/strong><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>v=DMARC1; p=quarantine; rua=mailto:<mark style=\"background-color:#fcb900\" class=\"has-inline-color\">tumail@tudominio.com<\/mark>; ruf=mailto:<mark style=\"background-color:#fcb900\" class=\"has-inline-color\">tumail@tudominio.com<\/mark>; ri=86400;<\/code><\/pre>\n\n\n\n<p>Despu\u00e9s de verificar los informes durante un per\u00edodo prudente de tiempo podr\u00e1s hacer la regla m\u00e1s estricta.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u00bfEs obligatorio configurar DMARC?<\/h2>\n\n\n\n<p>Desde febrero del 2024 Gmail de Google y Yahoo informaron el requisito de contar con este protocolo para dominios que env\u00eden correos masivos. En el caso de Google (Gmail), por ejemplo, si se env\u00edan m\u00e1s de 5.000 correos por d\u00eda es obligatorio para evitar que los correos reboten<sup><a href=\"https:\/\/support.google.com\/a\/answer\/81126?hl=en\" target=\"_blank\" rel=\"noreferrer noopener\">1<\/a><\/sup>.<\/p>\n\n\n\n<p>Por lo que si desde tu dominio se realizan campa\u00f1as de email marketing masivas, la respuesta corta ser\u00eda si.<\/p>\n\n\n\n<p>De todas formas, aunque no env\u00edes emails de forma masiva, es recomendable implementarlo. Especialmente para instituciones propensas al fraude como bancos o entidades gubernamentales.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Herramienta para crear tu registro DMARC<\/h2>\n\n\n\n<p>Debajo te dejamos el enlace a nuestra herramienta para crear tu registro DNS de forma simple y r\u00e1pida.<\/p>\n\n\n\n<div class=\"wp-block-buttons is-layout-flex wp-block-buttons-is-layout-flex\">\n<div class=\"wp-block-button\"><a class=\"wp-block-button__link wp-element-button\" href=\"https:\/\/redhustle.com\/dmarc-generator\/\">Generador gratuito de registro DMARC de Red Hustle<\/a><\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>El correo electr\u00f3nico es una herramienta fundamental para la comunicaci\u00f3n, especialmente profesional. Sin embargo, su naturaleza abierta lo convierte en un blanco para ataques maliciosos&hellip;<\/p>\n","protected":false},"author":2,"featured_media":8106,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-8101","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-sin-categoria"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>\u00bfQu\u00e9 es DMARC? Configuraci\u00f3n, obligatoriedad y etiquetas - Red Hustle Blog<\/title>\n<meta name=\"description\" content=\"DMARC es un protocolo que combina las comprobaciones SPF y DKIM para validar correos. 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