{"id":20941,"date":"2020-12-25T20:23:59","date_gmt":"2020-12-25T20:23:59","guid":{"rendered":"https:\/\/easydmarc.com\/blog\/?p=20941"},"modified":"2025-08-07T08:38:56","modified_gmt":"2025-08-07T08:38:56","slug":"que-es-un-selector-dkim-y-como-funciona","status":"publish","type":"post","link":"https:\/\/easydmarc.com\/blog\/es\/que-es-un-selector-dkim-y-como-funciona\/","title":{"rendered":"\u00bfQu\u00e9 es un selector DKIM y c\u00f3mo funciona?"},"content":{"rendered":"<p><span style=\"font-weight: 400;\">Antes de empezar a tratar lo <\/span><b>que es un selector DKIM<\/b><span style=\"font-weight: 400;\"> necesitamos aclarar lo <\/span><b>que es DKIM<\/b><span style=\"font-weight: 400;\"> y <\/span><b>c\u00f3mo funciona. DKIM<\/b><span style=\"font-weight: 400;\"> es un m\u00e9todo de autenticaci\u00f3n para correos electr\u00f3nicos usados por m\u00faltiples organizaciones para proteger sus servidores de correo electr\u00f3nico. Puedes conseguir m\u00e1s informaci\u00f3n relacionada a DKIM y c\u00f3mo funciona en nuestro sitio web. Ahora podemos hablar del tema que nos ocupa:<\/span><\/p>\n<h2><b>\u00bfQu\u00e9 es un selector DKIM y c\u00f3mo funciona?<\/b><\/h2>\n<p><span style=\"font-weight: 400;\">Para ofrecer asistencia t\u00e9cnica a m\u00faltiples claves de acceso DKIM en un solo dominio, al protocolo DKIM estandarizado les es introducida nociones de \u201cselector,\u201d un hilo arbitrario que ayuda el proceso manejado por la clave p\u00fablica de identificaci\u00f3n DKIM. Generalmente podemos ver este valor identificado con la etiqueta \u201cs=\u201d en la <\/span><b>firma DKIM<\/b><span style=\"font-weight: 400;\"> ubicada en el espacio del encabezado, que es donde conseguimos toda la informaci\u00f3n t\u00e9cnica de cualquier correo <\/span><\/p>\n<p><img decoding=\"async\" class=\"aligncenter wp-image-17422 size-full\" src=\"https:\/\/easydmarc.com\/blog\/wp-content\/uploads\/2020\/12\/what-is-dkim-selector.png\" alt=\"what-is-dkim-selector-dkim-signature\" width=\"732\" height=\"24\" srcset=\"https:\/\/easydmarc.com\/blog\/wp-content\/uploads\/2020\/12\/what-is-dkim-selector.png 732w, https:\/\/easydmarc.com\/blog\/wp-content\/uploads\/2020\/12\/what-is-dkim-selector-300x10.png 300w\" sizes=\"(max-width: 732px) 100vw, 732px\" \/><\/p>\n<p><span style=\"font-weight: 400;\">El servidor que recibe el correo usa un selector para localizar y recolectar la clave p\u00fablica y verificar que el mensaje que sale del servidor de origen ha sido autenticado y no ha sido alterado de ninguna forma en su tr\u00e1nsito.&nbsp;<\/span><\/p>\n<h2><b>\u00bfPuede tener m\u00faltiples selectores DKIM?<\/b><\/h2>\n<p><span style=\"font-weight: 400;\">Por supuesto, muchas organizaciones tienden a usar m\u00faltiples proveedores de correo y servicios de terceros para sus estrategias de correos (tales como servicios de marketing u operaciones transaccionales). Cada servicio posee su propia <\/span><b>firma DKIM<\/b><span style=\"font-weight: 400;\"> identificada con selectores espec\u00edficos que permiten que los procesos de firma y verificaci\u00f3n de un servicio no interfieran con el otro.&nbsp;<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Supongamos que tu organizaci\u00f3n usa GSuit, Sendgrid y MailChimp a la vez. En este caso cada servicio provee su propia<\/span><b> firma DKIM<\/b><span style=\"font-weight: 400;\"> que puede ser verificada con un selector.&nbsp;&nbsp;<\/span><\/p>\n<p><b>Por ejemplo:<\/b><span style=\"font-weight: 400;\">&nbsp;<\/span><\/p>\n<p><b><i>El selector DKIM de Google es el siguiente:<\/i><\/b><span style=\"font-weight: 400;\">&nbsp;<\/span><\/p>\n<p><span style=\"font-weight: 400;\">google._domainkey.[yourdomain.com] el cual contiene la firma publica DKIM (donde \u201cgoogle\u201d es el selector)<\/span><\/p>\n<p><b><i>El selector DKIM de Sendgrid es el siguiente:<\/i><\/b><\/p>\n<p><span style=\"font-weight: 400;\">S1._domainkey.[yourdomain.com] el cual contiene la firma publica DKIM (donde \u201cs1\u201d es el selector)<\/span><\/p>\n<p><b><i>Y el selector de DKIM de MailChimp\u2019s es el siguiente:<\/i><\/b><\/p>\n<p><span style=\"font-weight: 400;\">k1._domainkey.[yourdomain.com] el cual contiene la firma publica DKIM&nbsp;<\/span><\/p>\n<p><span style=\"font-weight: 400;\">k2._domainkey.[yourdomain.com] el cual contiene la firma publica DKIM (donde \u201ck1\u201d y \u201ck2\u201d are son los selectores)<\/span><\/p>\n<h3><span style=\"font-weight: 400;\">\u00bfQui\u00e9nes se encargan de proveer selectores DKIM?<\/span><\/h3>\n<p><span style=\"font-weight: 400;\">B\u00e1sicamente depende de la fuente del servicio. Si est\u00e1s usando un proveedor de servicio de correos en espec\u00edfico o servicios de terceros, estos usualmente tienen la documentaci\u00f3n que describe el procedimiento paso a paso de c\u00f3mo implementar tu <\/span><b>firma DKIM<\/b><span style=\"font-weight: 400;\">. Para algunas fuentes es posible elegir selectores hechos a la medida, mientras que otros usan selectores que vienen instalados por default o incluidos en sus sistemas.&nbsp;<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Algunas otras fuentes tales como Office 365 y MailChimp siguen medidas de seguridad DKIM un poco m\u00e1s extremas, solicitando a las organizaciones que usan sus servicios la publicaci\u00f3n de m\u00faltiples <\/span><b>selectores DKIM<\/b><span style=\"font-weight: 400;\"> y registros que apoyen la rotaci\u00f3n autom\u00e1tica de <\/span><b>claves DKIM<\/b><span style=\"font-weight: 400;\"> a trav\u00e9s de registros CNAME.&nbsp;<\/span><\/p>\n<p><span style=\"font-weight: 400;\">EasyDMARC provee sus servicios a m\u00e1s de 1.000 proveedores de servicios de correos electr\u00f3nicos, con los cuales los pasos de configuraci\u00f3n de SPF y DKIM est\u00e1n disponibles en la documentaci\u00f3n oficial que identifica cada fuente.&nbsp;<\/span><\/p>\n<p><img fetchpriority=\"high\" decoding=\"async\" class=\"alignleft wp-image-17425 \" src=\"https:\/\/easydmarc.com\/blog\/wp-content\/uploads\/2020\/12\/Google-and-AmazonSES-Configuration-steps-from-EasyDMARC-portal-1-300x207.png\" alt=\"Google-and-AmazonSES-Configuration-steps-from-EasyDMARC-portal\" width=\"349\" height=\"241\" srcset=\"https:\/\/easydmarc.com\/blog\/wp-content\/uploads\/2020\/12\/Google-and-AmazonSES-Configuration-steps-from-EasyDMARC-portal-1-300x207.png 300w, https:\/\/easydmarc.com\/blog\/wp-content\/uploads\/2020\/12\/Google-and-AmazonSES-Configuration-steps-from-EasyDMARC-portal-1.png 719w\" sizes=\"(max-width: 349px) 100vw, 349px\" \/><\/p>\n<p><img decoding=\"async\" class=\"alignleft wp-image-17424 size-medium\" src=\"https:\/\/easydmarc.com\/blog\/wp-content\/uploads\/2020\/12\/3-300x255.png\" alt=\"Google-and-AmazonSES-Configuration-steps-from-EasyDMARC-portal\" width=\"300\" height=\"255\" srcset=\"https:\/\/easydmarc.com\/blog\/wp-content\/uploads\/2020\/12\/3-300x255.png 300w, https:\/\/easydmarc.com\/blog\/wp-content\/uploads\/2020\/12\/3.png 720w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/p><p><b>Por ejemplo: <\/b><span style=\"font-weight: 400;\">Google y AmazonSES siguen los pasos de configuraci\u00f3n ofrecidos por EasyDMARC en su portal.<\/span><\/p>\n<h2><b>\u00bfC\u00f3mo puedo conseguir un selector DKIM?<\/b><\/h2>\n<p><span style=\"font-weight: 400;\">La forma m\u00e1s sencilla de conseguir estos selectores es envi\u00e1ndote un correo a ti mismo y prestar atenci\u00f3n a lo que aparece en el encabezado del correo.&nbsp;<\/span><\/p>\n<ol>\n<li><span style=\"font-weight: 400;\"> En Gmail, por ejemplo, la firma es la frase \u201cMostrar correo original\u201d<\/span><\/li>\n<\/ol>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-17426 size-full aligncenter\" src=\"https:\/\/easydmarc.com\/blog\/wp-content\/uploads\/2020\/12\/How-can-I-find-my-DKIM-selector.png\" alt=\"How-can-I-find-my-DKIM-selector\" width=\"303\" height=\"523\" srcset=\"https:\/\/easydmarc.com\/blog\/wp-content\/uploads\/2020\/12\/How-can-I-find-my-DKIM-selector.png 303w, https:\/\/easydmarc.com\/blog\/wp-content\/uploads\/2020\/12\/How-can-I-find-my-DKIM-selector-174x300.png 174w\" sizes=\"(max-width: 303px) 100vw, 303px\" \/><\/p>\n<p><span style=\"font-weight: 400;\">2. Haz una b\u00fasqueda para la \u201c<\/span><b>firma DKIM<\/b><span style=\"font-weight: 400;\">\u201d para encontrar qu\u00e9 tipo de firma se aplica a tu correo electr\u00f3nico.<\/span><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-17427 size-large\" src=\"https:\/\/easydmarc.com\/blog\/wp-content\/uploads\/2020\/12\/DKIM-signature-1024x72.png\" alt=\"DKIM-signature\" width=\"1024\" height=\"72\" srcset=\"https:\/\/easydmarc.com\/blog\/wp-content\/uploads\/2020\/12\/DKIM-signature-1024x72.png 1024w, https:\/\/easydmarc.com\/blog\/wp-content\/uploads\/2020\/12\/DKIM-signature-300x21.png 300w, https:\/\/easydmarc.com\/blog\/wp-content\/uploads\/2020\/12\/DKIM-signature-768x54.png 768w, https:\/\/easydmarc.com\/blog\/wp-content\/uploads\/2020\/12\/DKIM-signature-1536x108.png 1536w, https:\/\/easydmarc.com\/blog\/wp-content\/uploads\/2020\/12\/DKIM-signature.png 1889w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/p>\n<p><span style=\"font-weight: 400;\">En ocasiones conseguir\u00e1s m\u00faltiples firmas DKIM en tu mensaje. En este caso aseg\u00farate de rastrear el que contiene el nombre de tu dominio aplicado en la etiqueta d=yourdomain.com.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Si no logras <\/span><b>conseguir la firma DKIM<\/b><span style=\"font-weight: 400;\"> en el encabezado, o si no consigues la <\/span><b>firma DKIM<\/b><span style=\"font-weight: 400;\"> que coincide con tu dominio, necesitas tomar algunos pasos adicionales para que tu proveedor de servicios de correo est\u00e9 configurado con tu<\/span><b> firma DKIM<\/b><span style=\"font-weight: 400;\">. Puedes leer todo acerca de este tema en nuestro art\u00edculo sobre Alineamiento DMARC en su sitio web.&nbsp;<\/span><\/p>\n<p><span style=\"font-weight: 400;\">3. Siempre deber\u00edas poder conseguir selector de tu <\/span><b>firma DKIM<\/b><span style=\"font-weight: 400;\"> sin que tengas que ver el encabezado en la pantalla de inicio de tus utilidades DMARC, tal como puedes ver en la siguiente imagen: <\/span><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-17428 size-large\" src=\"https:\/\/easydmarc.com\/blog\/wp-content\/uploads\/2020\/12\/DKIM-Signature-selectors-1024x149.png\" alt=\"DKIM-Signature-selectors\" width=\"1024\" height=\"149\"\/><\/p>\n<h2><b>Conclusi\u00f3n<\/b><\/h2>\n<h4><span style=\"font-weight: 400;\">Inspeccionar y verificar tu <b>firma DKIM <\/b>es uno de los pasos esenciales para remover fallos en este tipo de protocolos. Puedes usar la herramienta de revisi\u00f3n DKIM para analizar a profundidad la firma y tomar los pasos correctos para una configuraci\u00f3n m\u00e1s \u00fatil y oportuna. <\/span><\/h4>\n","protected":false},"excerpt":{"rendered":"<p>Antes de empezar a tratar lo que es &#8230;<\/p>\n","protected":false},"author":6,"featured_media":46321,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"inline_featured_image":false,"jetpack_post_was_ever_published":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[472,403,393],"tags":[],"class_list":["post-20941","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog-es","category-dkim-es","category-seguridad-de-los-correos-electronicos"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v27.3 (Yoast SEO v27.3) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>\u00bfQu\u00e9 es un selector DKIM y c\u00f3mo funciona? 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